
Flexibility
Highly elastic materials give you freedom of movement through every phase of the stroke.
Clearance sale now onOrca open water wetsuit
Size 11
A flexible, neutral buoyancy wetsuit for men who are just starting out in open water.
Price$240$399Save $159
In stockSale item: doesn't count toward free shipping
3 options, 3 in stock
Sold out in this option. ·
Selected option
Everything here follows your choice above: photos, price, stock and shipping.
What you'll love
High flexibility in the shoulders makes early open water workouts comfortable, while 3 mm neoprene keeps you warm and feeling secure.

Highly elastic materials give you freedom of movement through every phase of the stroke.

3 mm neoprene in the torso and legs keeps you warm so you can stay out longer.

3 mm panels help you keep a good position and move through the water quickly.
The spec, checked
Each fact comes from Orca's own information for the version we sell, with its source. Checked by TriShop
Orca's ratings graphic scores the Core TRN 7 out of 10 for thermal insulation, flexibility and buoyancy alike.
Orca describes the Openwater Core TRN as a wetsuit for swimmers just starting out in open water, with high flexibility and neutral buoyancy.
Orca says the highly elastic materials give more flexibility in all phases of the swim stroke, for freedom of movement in open water sessions. Orca.com Openwater Core TRN Men Wetsuit page (REF LN28TT01), Wayback snapshot 26 Sep 2022
Orca's men's one-piece wetsuit size guide (cm and kg) gives: size 4 fits chest 85-91 cm, height 157-170 cm, weight 55-61 kg; size 5 fits chest 90-95 cm, height 162-172 cm, weight 61-66 kg; size 6 fits chest 95-99 cm, height 167-175 cm, weight 67-74 kg; size MT fits chest 95-99 cm, height 177-188 cm, weight 68-76 kg. Orca.com Openwater Core TRN Men Wetsuit page (REF LN28TT01), Wayback snapshot 27 Jan 2023 (size guide)
Orca's men's one-piece wetsuit size guide (cm and kg) continues: size 7 fits chest 98-104 cm, height 173-185 cm, weight 75-82 kg; size 8 fits chest 104-108 cm, height 180-188 cm, weight 82-89 kg; size 9 fits chest 108-113 cm, height 185-193 cm, weight 89-97 kg; size 10 fits chest 114-124 cm, height 190-196 cm, weight 98-106 kg; size 11 fits chest 123-134 cm, height 193-200 cm, weight 107 kg and over. Orca.com Openwater Core TRN Men Wetsuit page (REF LN28TT01), Wayback snapshot 27 Jan 2023 (size guide)
Orca says 3 mm thick neoprene in the torso and legs provides the thermal insulation. Orca.com Openwater Core TRN Men Wetsuit page (REF LN28TT01), Wayback snapshot 26 Sep 2022
Orca's ratings graphic for the Openwater Core TRN scores Thermal Insulation 7 out of 10, Flexibility 7 out of 10 and Buoyancy 7 out of 10. Orca Openwater Core TRN ratings graphic (TriShop product photo 5)
Orca says the 3 mm panels allow you to maintain neutral buoyancy. Orca.com Openwater Core TRN Men Wetsuit page (REF LN28TT01), Wayback snapshot 26 Sep 2022
Orca says the Core TRN has high flexibility in the shoulders. Orca.com Openwater Core TRN Men Wetsuit page (REF LN28TT01), Wayback snapshot 26 Sep 2022
Orca says to wash the wetsuit with plenty of water after use, using a small amount of neutral pH soap if needed and rinsing it out. Then air dry it outside or in a ventilated indoor space, out of direct sunlight, which can damage its materials. Orca.com Openwater Core TRN Men Wetsuit page (REF LN28TT01), Wayback snapshot 26 Sep 2022
Orca says the best way to store a wetsuit is to hang it draped from its waist. It says Apex Flex and Apex Flow wetsuits should not be put on a hanger from the shoulder area, and that for the rest of its models a wide hanger can be used as long as the shoulder and neck area is not strained. Orca.com Openwater Core TRN Men Wetsuit page (REF LN28TT01), Wayback snapshot 26 Sep 2022
Orca says to be careful not to damage the neoprene with your fingernails when putting the suit on or taking it off, and that this type of damage is not covered by its warranty policy. Orca.com Openwater Core TRN Men Wetsuit page (REF LN28TT01), Wayback snapshot 26 Sep 2022
Orca describes the Openwater Core TRN as a wetsuit for swimmers just starting out in open water, with high flexibility and neutral buoyancy. Orca.com Openwater Core TRN Men Wetsuit page (REF LN28TT01), Wayback snapshot 26 Sep 2022
Orca lists the Openwater Core TRN in its men's Open Water wetsuits, as an open water wetsuit. Orca.com Openwater Core TRN Men Wetsuit page (REF LN28TT01), Wayback snapshot 26 Sep 2022
Orca says triathlon and open water wetsuits are designed specifically for surface swimming, that it cannot guarantee correct performance for other activities, and that damage from other activities is not covered by its warranty policy. Orca.com Openwater Core TRN Men Wetsuit page (REF LN28TT01), Wayback snapshot 26 Sep 2022
Size guide
Orca sizes by chest, height and weight. When in doubt, go by chest. Questions? Ask us before you buy.
Thanks to the high elasticity of the materials, the more flexible wetsuits adapt better to the swimmer’s body than those with less elasticity.
If you’re choosing a wetsuit with less flexibility, you should select a size that fits well to your body.
We always recommend trying the wetsuit on to make sure that the fit feels right. However, should you have any questions, contact us and we’ll be happy to help you.
When selecting the ideal wetsuit size, three measurements should be taken into account: chest circumference, height and weight. When in doubt, we recommend choosing the size that best fits your chest circumference, since it is important that the wetsuit is well- fitted in this area.
| Size | Chest | Height | Weight | |||
|---|---|---|---|---|---|---|
| CM. | IN. | CM. | FEET/INCH. | KG. | LB. | |
| XS | 78 - 83 | 31 - 33 | 144 - 160 | 4/9 - 5/3 | 46 - 54 | 101 - 116 |
| XST | 79-85 | 31-34 | 157-167 | 5/3-5/6 | 53-60 | 116-132 |
| S | 83 - 89 | 33 - 35 | 157 - 167 | 5/3 - 5/6 | 54 - 61 | 118 - 134 |
| ST | 83-89 | 33-35 | 169-183 | 5/6-6/0 | 58-65 | 127-143 |
| M | 89 - 94 | 35 - 37 | 165 - 177 | 5/5 - 5/10 | 60 - 67 | 132 - 147 |
| L | 94 - 99 | 37 - 39 | 170 - 185 | 5/8 - 6/1 | 66 - 74 | 145 - 163 |
| XL | 99 - 104 | 39 - 41 | 177 - 189 | 5/10 - 6/2 | 73 - 79 | 160 - 173 |
| Size | Chest | Height | Weight | |||
|---|---|---|---|---|---|---|
| CM. | IN. | CM. | FEET/INCH. | KG. | LB. | |
| XS | 78 - 83 | 31 - 33 | 144 - 160 | 4/9 - 5/3 | 46 - 54 | 101 - 116 |
| S | 83 - 89 | 33 - 35 | 157 - 167 | 5/3 - 5/6 | 54 - 61 | 118 - 134 |
| M | 89 - 94 | 35 - 37 | 165 - 177 | 5/5 - 5/10 | 60 - 67 | 132 - 147 |
| L | 94 - 99 | 37 - 39 | 170 - 185 | 5/8 - 6/1 | 66 - 74 | 145 - 163 |
| XL | 99 - 104 | 39 - 41 | 177 - 189 | 5/10 - 6/2 | 73 - 79 | 160 - 173 |
Freedive wetsuits: This garment is made of compressive fabric. If you are between sizes, choose the larger size.
| Size | Chest | Height | Weight | ||||
|---|---|---|---|---|---|---|---|
| CM. | IN. | CM. | FEET/INCH. | KG. | LB. | ||
| XS | 6 | 79 - 84 | 31 - 33 | 155 - 162 | 5/1 - 5/4 | 49 - 56 | 108 - 123 |
| S | 8 | 82 - 88 | 32 - 35 | 160 - 166 | 5/3 - 5/5 | 54 - 61 | 119 - 134 |
| M | 10 | 86 - 91 | 34 - 36 | 165 - 171 | 5/5 - 5/7 | 60 - 66 | 132 - 145 |
| L | 12 | 90 - 96 | 35 - 38 | 170 - 176 | 5/7 - 5/9 | 65 - 71 | 143 - 156 |
| XL | 14 | 95 - 100 | 37 - 39 | 175 - 181 | 5/9 - 5/11 | 70 - 76 | 154 - 167 |
| Size | Chest | Height | Weight | ||||
|---|---|---|---|---|---|---|---|
| CM. | IN. | CM. | FEET/INCH. | KG. | LB. | ||
| XS | 6 | 79 - 85 | 31 - 33 | 153 - 163 | 5/0 - 5/4 | 45 - 54 | 99 - 119 |
| S | 8 | 83 - 89 | 32 - 35 | 161 - 168 | 5/3 - 5/6 | 52 - 61 | 114 - 134 |
| M | 10 | 87 - 93 | 34 - 36 | 166 - 173 | 5/5 - 5/8 | 57 - 66 | 125 - 145 |
| L | 12 | 91 - 97 | 35 - 38 | 171 - 178 | 5/7 - 5/10 | 64 - 73 | 141 - 160 |
| XL | 14 | 95 - 101 | 37 - 40 | 176 - 183 | 5/9 - 6/0 | 72 - 81 | 158 - 178 |
| Size | Chest | Height | Weight | |||
|---|---|---|---|---|---|---|
| CM. | IN. | CM. | FEET/INCH. | KG. | LB. | |
| 4 | 85 - 91 | 33 - 36 | 157 - 170 | 5/2 - 5/7 | 55 - 61 | 121 - 134 |
| 5 | 90 - 95 | 35 - 37 | 162 - 172 | 5/4 - 5/8 | 61 - 66 | 134 - 145 |
| 6 | 95 - 99 | 37 - 39 | 167 - 175 | 5/6 - 5/9 | 67 - 74 | 147 - 162 |
| MT | 95 - 99 | 37 - 39 | 177 - 188 | 5/10 - 6/2 | 68 - 76 | 149 - 167 |
| 7 | 98 - 104 | 38 - 41 | 173 - 185 | 5/8 - 6/1 | 75 - 82 | 165 - 180 |
| 8 | 104 - 108 | 41 - 43 | 180 - 188 | 5/11 - 6/2 | 82 - 89 | 180 - 196 |
| 9 | 108 - 113 | 43 - 44 | 185 - 193 | 6/1 - 6/4 | 89 - 97 | 196 - 213 |
| 10 | 114 - 124 | 45 - 49 | 190 -196 | 6/3 - 6/5 | 98 - 106 | 215 - 233 |
| 11 | 123 - 134 | 49 - 53 | 193 - 200 | 6/4 - 6/6 | 107 + | 235 + |
Freedive wetsuits: This garment is made of compressive fabric. If you are between sizes, choose the larger size.
| Size | Chest | Height | Weight | ||||
|---|---|---|---|---|---|---|---|
| CM. | IN. | CM. | FEET/INCH. | KG. | LB. | ||
| XS | 4 | 83 - 89 | 32 - 35 | 157 - 168 | 5/2 - 5/6 | 50 - 58 | 110 - 128 |
| XST | 5 | 87 - 93 | 34 - 37 | 166 - 172 | 5/4 - 5/8 | 56 - 63 | 123 - 139 |
| S | 6 | 90 - 96 | 35 - 38 | 170 - 176 | 5/7 - 5/9 | 62 - 70 | 137 - 154 |
| MT | 6T | 90 - 96 | 35 - 38 | 176 - 182 | 5/9 - 6 | 65 - 78 | 143 - 172 |
| M | 7 | 95 - 101 | 37 - 40 | 174 - 180 | 5/8 - 5/11 | 68 - 75 | 150 - 165 |
| L | 8 | 99 - 105 | 39 - 41 | 177 - 183 | 5/10 - 6 | 75 - 82 | 165 - 181 |
| XL | 9 | 103 - 109 | 40 - 43 | 182 - 189 | 6/1 - 6/3 | 80 - 87 | 176 - 192 |
| XLT | 10 | 108 - 114 | 42 - 45 | 187 - 193 | 6/2 - 6/4 | 87 - 95 | 192 - 209 |
| XXL | 11 | 113 - 119 | 44 - 47 | 191 - 197 | 6/3 - 6/5 | 92 - 100 | 203 - 220 |
| Size | Chest | Height | Weight | |||
|---|---|---|---|---|---|---|
| CM. | IN. | CM. | FEET/INCH. | KG. | LB. | |
| XS | 86 - 92 | 33 - 36 | 163 - 171 | 5/4 - 5/7 | 50 - 60 | 110 - 132 |
| S | 92 - 98 | 36 - 38 | 169 - 176 | 5/6 - 5/9 | 60 - 70 | 132 - 154 |
| ST | 92 - 98 | 36 - 38 | 176 - 183 | 5/9 - 5/12 | 63 - 73 | 138 - 161 |
| M | 98 - 104 | 38 - 41 | 175 - 181 | 5/8 - 5/11 | 70 - 80 | 154 - 176 |
| MT | 98 - 104 | 38 - 41 | 181 - 188 | 5/11 - 6/2 | 75 - 85 | 165 - 187 |
| LS | 104 - 110 | 41 - 43 | 173 - 180 | 5/8 - 5/10 | 75 - 85 | 165 - 187 |
| L | 104 - 110 | 41 - 43 | 179 - 186 | 5/10 - 6/1 | 80 - 90 | 176 - 198 |
| XL | 110 - 116 | 43 - 45 | 184 - 191 | 6/0 - 6/3 | 90 - 100 | 198 - 220 |
| XXL | 116 - 122 | 45 - 48 | 189 - 196 | 6/2 - 6/5 | 100 - 110 | 220 - 242 |
For children’s sizing, the measurements we will look at are the chest circumference, waist, hips and height. When in doubt, go by the chest circumference in this case as well.
| Size | Chest | Waist | Hips | Height | ||||
|---|---|---|---|---|---|---|---|---|
| CM. | IN. | CM. | IN. | CM. | IN. | CM. | IN. | |
| 8 | 64 - 69 | 25 - 27 | 55 - 60 | 21.5 - 23.5 | 67 - 72 | 26.5 - 28.5 | 125 - 135 | 4'1" - 4'5" |
| 10 | 69 - 74 | 27 - 29 | 60 - 65 | 23.5 - 25.5 | 72 - 77 | 28.5 - 30.5 | 135 - 145 | 4'5" - 4'9" |
| 12 | 74 - 79 | 29 - 31 | 65 - 70 | 25.5 - 27.5 | 77 - 82 | 30.5 - 32.5 | 145 - 155 | 4'9" - 5'1" |
To determine the ideal size of a two-piece wetsuit, four measurements should be taken into account: chest circumference, waist, height and weight.
The chest circumference, height and weight help to figure out which size top will fit best. When in doubt, the chest circumference should be the most closely fitted.
| Size | Chest | Height | Weight | |||
|---|---|---|---|---|---|---|
| CM. | INCH. | CM. | FEET/INCH. | KG. | LBS. | |
| XXS | 65 - 77 | 25 - 30 | 138 - 143 | 4/5 - 4/7 | 32 - 45 | 70 - 99 |
| XS | 78 - 86 | 31 - 33 | 144 - 160 | 4/9 - 5/3 | 46 - 53 | 101 - 116 |
| S | 83 - 89 | 33 - 35 | 157 - 167 | 5/3 - 5/6 | 54 - 61 | 118 - 134 |
| M | 89 - 94 | 35 - 37 | 165 - 177 | 5/5 - 5/10 | 60 - 67 | 132 - 147 |
| L | 94 - 99 | 37 - 39 | 170 - 185 | 5/8 - 6/1 | 66 - 74 | 145 - 163 |
| XL | 99 - 104 | 39 - 41 | 177 - 189 | 5/10 - 6/2 | 73 - 79 | 160 - 173 |
Size | Chest | Height | Weight | |||
|---|---|---|---|---|---|---|
| CM. | INCH. | CM. | FEET/INCH. | KG. | LBS. | |
| 2 | 75 - 80 | 29 - 31 | 145 - 150 | 4/9 - 4/11 | 35 - 40 | 77 - 88 |
| 3 | 80 - 86 | 31 - 34 | 150 - 160 | 4/11 - 5/3 | 40 - 55 | 88 - 121 |
| 4 | 85 - 91 | 33 - 36 | 157 - 170 | 5/2 - 5/7 | 56 - 61 | 121 - 134 |
| 5 | 90 - 95 | 35 - 37 | 162 - 170 | 5/4 - 5/8 | 61 - 66 | 134 - 145 |
| 6 | 95 - 99 | 37 - 39 | 167 - 175 | 5/6 - 5/9 | 67 - 74 | 147 - 162 |
| MT | 95 - 99 | 37 - 39 | 177 - 190 | 5/10 - 6/2 | 68 - 76 | 149 - 167 |
| 7 | 98 - 104 | 38 - 41 | 173 - 185 | 5/8 - 6/1 | 75 - 82 | 165 - 180 |
| 8 | 104 - 108 | 41 - 43 | 180 - 188 | 5/11 - 6/2 | 82 - 89 | 180 - 196 |
| 9 | 108 - 113 | 43 - 44 | 185 - 193 | 6/1 - 6/4 | 89 - 97 | 196 - 213 |
| 10 | 114 - 124 | 45 - 49 | 190 -196 | 6/3 - 6/5 | 98 - 109 | 215 - 233 |
| 11 | 123 - 134 | 49 - 53 | 193 - 200 | 6/4 - 6/6 | 107 + | 235 + |
To choose wetsuit bottoms, you should take into account your waist measurement, height and weight. In this case, your waist is the most important measurement.
| Size | Waist | Height | Weight | |||
|---|---|---|---|---|---|---|
| CM. | INCH. | CM. | INCH. | KG. | LBS. | |
| XXS | 51 - 60.5 | 20 - 24 | 138 - 143 | 4/5 - 4/7 | 32 - 45 | 70 - 99 |
| XS | 60.5 - 65.5 | 24 - 26 | 144 - 160 | 4/9 - 5/3 | 46 - 53 | 101 - 116 |
| S | 65.5 - 71.5 | 26 - 28 | 157 - 167 | 5/3 - 5/6 | 54 - 61 | 118 - 134 |
| M | 71.5 - 76.5 | 28 - 30 | 165 - 177 | 5/5 - 5/10 | 60 - 67 | 132 - 147 |
| L | 76.5 - 81.5 | 30 - 32 | 170 - 185 | 5/8 - 6/1 | 66 - 74 | 145 - 163 |
| XL | 81.5 - 86.5 | 32 - 34 | 177 - 189 | 5/10 - 6/2 | 73 - 79 | 160 - 173 |
| Size | Waist | Height | Weight | |||
|---|---|---|---|---|---|---|
| CM. | INCH. | CM. | INCH. | KG. | LBS. | |
| 2 | 70.5 - 73.5 | 28 - 29 | 145 - 150 | 4/9 - 4/11 | 35 - 40 | 77 - 88 |
| 3 | 73.5 - 76.5 | 29 - 30 | 150 - 160 | 4/11 - 5/3 | 40 - 55 | 88 - 121 |
| 4 | 75.5 - 78.5 | 30 - 31 | 157 - 170 | 5/2 - 5/7 | 56 - 61 | 121 - 134 |
| 5 | 78.5 - 81.5 | 31 - 32 | 162 - 170 | 5/4 - 5/8 | 61 - 66 | 134 - 145 |
| 6 | 81.5 - 83.5 | 32 - 33 | 167 - 175 | 5/6 - 5/9 | 67 - 74 | 147 - 162 |
| MT | 81.5 - 83.5 | 32 - 33 | 177 - 190 | 5/10 - 6/2 | 68 - 76 | 149 - 167 |
| 7 | 83 - 86.5 | 33 - 34 | 173 - 185 | 5/8 - 6/1 | 75 - 82 | 165 - 180 |
| 8 | 86.5 - 89 | 34 - 35 | 180 - 188 | 5/11 - 6/2 | 82 - 89 | 180 - 196 |
| 9 | 89 - 92 | 35 - 36 | 185 - 193 | 6/1 - 6/4 | 89 - 97 | 196 - 213 |
| 10 | 92 - 98 | 36 - 39 | 190 -196 | 6/3 - 6/5 | 98 - 109 | 215 - 233 |
| 11 | 98 - 105 | 39 - 41 | 193 - 200 | 6/4 - 6/6 | 107 + | 235 + |
When selecting your size, your chest, waist and hip measurements should be referenced. Don’t forget that each range is different and has a different elasticity, compression and pattern. To ensure a better fit, Orca has developed its own size chart for garments in each range.
| Size | Chest | Waist | Hips | ||||
|---|---|---|---|---|---|---|---|
| UK / AUS / NZ | USA / EUROPE / REST OF THE WORLD |
CM. | INCH. | CM. | INCH. | CM. | INCH. |
| 8 | XS | 79 - 85 | 31 - 33.5 | 61 - 67 | 24 - 26.5 | 85 - 91.5 | 33.5 - 36 |
| 10 | S | 85 - 91.5 | 33.5 - 36 | 67 - 73.5 | 26.5 - 29 | 91.5 - 98 | 36 - 38.5 |
| 12 | M | 91.5 - 98 | 36 - 38.5 | 73.5 - 80 | 29 - 31.5 | 98 - 104 | 38.5 - 41 |
| 14 | L | 98 - 104 | 38.5 - 41 | 80 - 86 | 31.5 - 34 | 104 - 110.5 | 41 - 43.5 |
| 16 | XL | 104 - 110.5 | 41 - 43.5 | 86 - 93 | 34 - 36.5 | 110.5 - 117 | 43.5 - 46 |
| Size | Chest | Waist | Hips | |||
|---|---|---|---|---|---|---|
| CM. | INCH. | CM. | INCH. | CM. | INCH. | |
| XS | 76 - 85 | 30 - 33.5 | 71 - 76 | 28 - 30 | 76 - 85 | 30 - 33.5 |
| S | 85 - 94 | 33.5 - 37 | 76 - 81 | 30 - 32 | 85 - 94 | 33.5 - 37 |
| M | 94 - 103 | 37 - 40.5 | 81 - 86 | 32 - 34 | 94 - 103 | 37 - 40.5 |
| L | 103 - 112 | 40.5 - 44 | 86 - 91.5 | 34 - 36 | 103 - 112 | 40.5 - 44 |
| XL | 112 - 120.5 | 44 - 47.5 | 91.5 - 96.5 | 36 - 38 | 112 - 120.5 | 44 - 47.5 |
| XXL | 120.5 - 129.5 | 47.5 - 51 | 96.5 - 101.5 | 38 - 40 | 120.5 - 129.5 | 47.5 - 51 |
| Size | Chest | Waist | Hips | Height | ||||
|---|---|---|---|---|---|---|---|---|
| CM. | INCH. | CM. | INCH. | CM. | INCH. | CM. | INCH. | |
| 8 | 64-69 | 25-27 | 55-60 | 21.5-23.5 | 67-72 | 26.5-28.5 | 125-135 | 4'1"-4'5" |
| 10 | 69-74 | 27-29 | 60-65 | 23.5-25.5 | 72-77 | 28.5-30.5 | 135-145 | 4'5"-4'9" |
| 12 | 74-79 | 29-31 | 65-70 | 25.5-27.5 | 77-82 | 30.5-32.5 | 145-155 | 4'9"-5'1" |
To select your ideal size for Orca accessories, you should take into account your chest, waist and hip measurements.
| Size | Chest | Height | Weight | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| INCH - | INCH + | CM - | CM + | FEET/ INCH - | FEET/ INCH + | CM - | CM + | LBS - | LBS + | KG - | KG + | |
| XXS | 25 | 30 | 65 | 77 | 4/5 | 4/7 | 138 | 143 | 70 | 99 | 32 | 45 |
| XS | 31 | 33 | 78 | 86 | 4/9 | 5/3 | 144 | 160 | 101 | 116 | 46 | 53 |
| S | 33 | 35 | 83 | 89 | 5/3 | 5/6 | 157 | 167 | 118 | 134 | 54 | 61 |
| M | 35 | 37 | 89 | 94 | 5/5 | 5/10 | 165 | 177 | 132 | 147 | 60 | 67 |
| L | 37 | 39 | 94 | 99 | 5/8 | 6/1 | 170 | 185 | 145 | 163 | 66 | 74 |
| XL | 39 | 41 | 99 | 104 | 5/10 | 6/2 | 177 | 189 | 160 | 173 | 73 | 79 |
| Size | Chest | Waist | Hips | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| INCH - | INCH + | CM - | CM + | INCH - | INCH + | CM - | CM + | INCH - | INCH + | CM - | CM + | |
| XS | 30.0 | 33.5 | 76 | 85 | 28.0 | 30.0 | 71 | 76 | 30.0 | 33.5 | 76 | 85 |
| S | 33.5 | 37.0 | 85 | 94 | 30.0 | 32.0 | 76 | 81 | 33.5 | 37.0 | 85 | 94 |
| M | 37.0 | 40.5 | 94 | 103 | 32.0 | 34.0 | 81 | 86 | 37.0 | 40.5 | 94 | 103 |
| L | 40.5 | 44.0 | 103 | 112 | 34.0 | 36.0 | 86 | 91.5 | 40.5 | 44.0 | 103 | 112 |
| XL | 44.0 | 47.5 | 112 | 120.5 | 36.0 | 38 | 91.5 | 96.5 | 44.0 | 47.5 | 112 | 120.5 |
| XXL | 47.5 | 51 | 120.5 | 129.5 | 38 | 40 | 96.5 | 101.5 | 47.5 | 51 | 120.5 | 129.5 |
To determine your ideal cap size, measure the circumference and length of your head according to the following image.
Your head circumference is measured just above the eyebrows, while your head length is measured from one finger length above the eyebrows to the nape of your neck.
| Size | Head Circumference | Head Length | ||
|---|---|---|---|---|
| INCH. | CM | INCH. | CM | |
| S / M | 20.9-22.8 | 53-58 | 13.4-15.4 | 34-39 |
| L / XL | 21.7-23.6 | 55-60 | 14.2-16.5 | 36-42 |
| Size | Head Circumference | |||
|---|---|---|---|---|
| INCH - | INCH + | CM - | CM + | |
| S/M | 20 7/8" | 22 7/8" | 53 | 58 |
| L/XL | 21 5/8" | 22 7/8" | 55 | 60 |
| XXL | 22 1/2" | 24 3/8" | 57 | 62 |
The size of your Swimrun Arm Sleeve will depend on the measurement of your biceps, which can be taken by measuring around this part of your arm, as shown in the image.
| Size | Biceps circumference | |
|---|---|---|
| INCH. | CM. | |
| XXS | < 10 | < 25.5 |
| XS | 10-11 | 25.5-28 |
| S | 11-12 | 28-30.5 |
| M | 12-13 | 30.5-33 |
| L | 13-14 | 33-35.5 |
| XL | 14-15 | 35.5-38 |
| XXL | > 15 | > 38 |
To determine the size of your Swimrun Calf Guard, measure the widest part of your calf, as seen in the picture.
| Size | Circumference (CM) | Circumference (INCH) |
|---|---|---|
| XS | 33-35.5 | 13-14 |
| S | 35.5-38 | 14-15 |
| M | 38-40.5 | 15-16 |
| L | 40.5-43 | 16-17 |
To select the correct size of Neoprene Gloves, measure the circumference of your hand, as shown in the following image.
| Size | Hand Circumference | |
|---|---|---|
| INCH. | CM | |
| XS | < 7 | < 17.8 |
| S | 7 - 7.5 | 17.8 - 19 |
| M | 7.5 - 8 | 19 - 20.3 |
| Size | Hand Circumference | |
|---|---|---|
| INCH. | CM | |
| S | 8 - 8.5 | 20.3 - 21.6 |
| M | 8.5 - 9 | 21.6 - 23 |
| L | > 9 | > 23 |
It is important to go by your usual shoe size when selecting the size of your Hydro Booties or Swim Socks to ensure that they will fit.
| Size | Shoe size | ||
|---|---|---|---|
| EUROPE | UK | USA | |
| XXS | 37 | 4.5 | 5 |
| XS | 38.5 | 5.5 | 6 |
| S | 40 | 6.5 | 7 |
| M | 41 | 7.5 | 8 |
| L | 42.5 | 8.5 | 9 |
| XL | 44 | 9.5 | 10 |
| XXL | 45 | 10.5 | 11 |
| 3XL | 46 | 11.5 | 12 |
| 4XL | 47 | 12.5 | 13 |
To select your ideal size in Aero Shoes, use your normal shoe size.
| Size | Shoe size | ||||
|---|---|---|---|---|---|
| EUROPE | UK WOMEN | UK MEN | USA WOMEN | USA MEN | |
| XS / S | 38-40 | 5-6.5 | 5.5-7 | 6.5-8 | 5.5-7 |
| M / L | 41-43 | 7-9 | 7.5-9.5 | 8.5-10.5 | 7.5-9.5 |
| XL / XXL | 44-46 | 9.5-11 | 10-11.5 | 11-12.5 | 10-11.5 |
To choose the right size of fins, go by your shoe size.
| Size | EUROPE | UK | USA |
|---|---|---|---|
| S | 36-38 | 3-5 | 4-6 |
| M | 38-41 | 5-7 | 6-8 |
| L | 41-43 | 7-9 | 8-10 |
| XL | 44-46 | 9-11 | 10-12 |
| Size | Chest | Height | ||
|---|---|---|---|---|
| CM. | IN. | CM. | IN. | |
| S | 65 - 90 | 25 - 35 | 138 - 167 | 4/5 - 5/6 |
| M | 89 - 99 | 35 - 39 | 165 - 185 | 5/5 - 6/1 |
| L | 99 - 115 | 39 - 45 | 180 - 198 | 5/8 - 6/6 |
HIRU tops have 3 types of fits.
For the best jersey fit, take your measurements based on the diagram and compare your results with the following table.
When deciding on a size, please consider that our apparel fits snug, so we recommend ordering at least one size up if your body measurements are borderline or between sizes.
HIRU designs each product to adapt differently and take advantage of the intrinsic characteristics of the fabrics and materials used in each one.
By following these simple steps, you will find the right shorts for racing, training or leisure rides. Adjust both the bottom and the straps snugly to the body so there are no wrinkles. You’ll experience a light, sticky feel.
Simulate a bike position for a few seconds and check for adequate mobility, then try pinching the fabric in the thigh area. If the fabric returns to its original position upon release, then it’s the right size.
Conversely, if you feel rubbing or constriction, or the seams or straps are too tight, try a larger size. The straps, the elastic bands or the lower part of the leg tend to roll up but can be easily returned to their place with a few small gestures.
The short’s fabric is designed to provide a slight compression effect, and it’s only effective if the fabric remains close to the body.
| XS (46) | S (48) | M (51) | L (54) | XL (57) | 2XL (60) | 3XL (62) | |
|---|---|---|---|---|---|---|---|
| A CHEST | 88 | 92 | 96 | 100 | 105 | 110 | 115 |
| B WAISTLINE | 76 | 80 | 84 | 88 | 93 | 98 | 103 |
| C HIP BONE | 92 | 96 | 100 | 104 | 109 | 114 | 119 |
| HEIGHT | 150/159 | 160/169 | 170/179 | 180/185 | 186/190 | 191/195 | - |
| XS (46) | S (48) | M (51) | L (54) | XL (57) | 2XL (60) | |
|---|---|---|---|---|---|---|
| A CHEST | 80 | 84 | 88 | 92 | 96 | 100 |
| B WAISTLINE | 63/66 | 67/70 | 71/74 | 75/80 | 79/82 | 83/86 |
| C HIP BONE | 89/92 | 93/96 | 97/100 | 101/104 | 105/108 | 109/112 |
| HEIGHT | 160 | 161/170 | 171/175 | 176/180 | - | - |
| XS (46) | S (48) | M (51) | L (54) | XL (57) | 2XL (60) | 3XL (62) | |
|---|---|---|---|---|---|---|---|
| B WAISTLINE | 76 | 80 | 84 | 88 | 93 | 98 | 103 |
| D LEG LENGTH | 70 | 70 | 74 | 76 | 78 | 80 | 82 |
| E LEG INSIDE | 24-26 | 24-26 | 26-28 | 26-28 | 28-30 | 28-30 | 28-30 |
| XS (46) | S (48) | M (51) | L (54) | XL (57) | 2XL (60) | |
|---|---|---|---|---|---|---|
| B WAISTLINE | 63/66 | 67/70 | 71/74 | 75/80 | 79/82 | 83/86 |
| D LEG LENGTH | 66 | 68 | 70 | 72 | 74 | 76 |
| E LEG INSIDE | 21/23 | 21/23 | 23/25 | 23/25 | 25/27 | 25/27 |
Palm circumference without thumb.
| SIZE | CM | INCH |
|---|---|---|
| 2XS | 17 - 19 | 6.7 - 7.4 |
| XS | 19 - 20 | 7.4 - 7.8 |
| S | 20 - 21 | 7.8 - 8.2 |
| M | 21 - 22 | 8.2 - 8.6 |
| L | 22 - 23 | 8.6 - 9.0 |
| XL | 23 - 25 | 9.0 - 9.8 |
| S | M | L |
|---|---|---|
| 35-37 | 38-42 | 43-47 |
Ask Kit
Kit is TriShop's AI assistant. It answers from checked facts and our policies, shows where each answer comes from, and says so when it doesn't know. A person is always one tap away.
Orca describes the Openwater Core TRN as a wetsuit for swimmers just starting out in open water, with high flexibility and neutral buoyancy.
Orca says the Core TRN has high flexibility in the shoulders.
Orca says the highly elastic materials give more flexibility in all phases of the swim stroke, for freedom of movement in open water sessions.
Orca says 3 mm thick neoprene in the torso and legs provides the thermal insulation.
About this product
The Openwater Core TRN is the perfect wetsuit for swimmers who are just starting out in open water. This wetsuit features high flexibility and neutral buoyancy. The high flexibility in the shoulders makes your first workouts in open water wonderfully comfortable, while the buoyancy will keep you feeling secure.
FLEXIBILITY
The highly elastic materials used in this wetsuit will provide you with more flexibility in all phases of the swim stroke, so you can enjoy total freedom of movement during your open water swimming sessions.
THERMAL INSULATION
The 3 mm thick neoprene in the torso and legs will provide you with the necessary thermal insulation so that you can extend your adventures at sea without worrying about low temperatures.
NEUTRAL BUOYANCY
The 3 mm panels will allow you to maintain neutral buoyancy, improving your position and allowing you to move through the water quickly.
No. It's on sale, and sale and clearance items don't count toward the $200 free-shipping threshold. An order without $200 of full-price items ships for a flat $16.45.
Ships direct from Orca's Australian supplier. Most orders arrive 4 to 7 business days after you order (longer to remote areas). Enter your postcode on this page for dates.
Sale and clearance items are final sale, so they can't be returned for change of mind or sizing. Faulty, damaged or incorrect items are always covered.
No. The $20 sign-up code isn't valid on sale or clearance items, and this is on sale. It works on full-price gear (first order, $100 or more).
Use the ORCA Sizing guide on this page. Orca sizes by chest, height and weight; when in doubt, go by chest, because the suit has to fit well there.
Keep looking
Orca Alpha Women's Triathlon Wetsuit$399
Orca Apex Flex Women's Triathlon Wetsuit$650
Orca Apex Float Men's Triathlon Wetsuit$585
Orca Apex Float Women's Triathlon Wetsuit$650
Orca Athlex Flex Men's Triathlon Wetsuit$360
Orca Athlex Flex Women's Triathlon Wetsuit$360
Orca Athlex Float Men's Triathlon Wetsuit$315
Orca Athlex Float Women's Triathlon Wetsuit$315 Press / to search from anywhere. Enter searches the full store.
Join the TriShop list and we will email you a single-use $20 code for your first order. Minimum spend $100. Not valid on sale or clearance items.