arena Size Charts
When using the sizing charts, please note that we use the USA sizes on our website.
Taking accurate body measurements is one of the keys to great fit. Follow our measurement tips and compare them to the size charts to find the right size for you.
How to Take Body Measurements
| For Women | For Men |
|---|---|
|
HIGH BUST: Wrap the measuring tape around your torso under the armpits and above the bust. FULL BUST: Take the measurement over the fullest part of your bust. |
CHEST: Take the measurement over the fullest part of your chest. |
|
HEIGHT: Stand up straight and measure the distance from the crown of your head to the sole of your foot. WAIST: Measure around the narrowest part of your waistline. HIPS: Measure around the fullest part of your hips. TORSO LOOP: In a loop, measure from the highest point of the shoulder, beneath the crotch and back up to the starting point. |
|
Women's Size Charts
Women's Racing Suits

Women's Training Suits, Beachwear and Shaping Swimwear

Women's Rule Breaker Bikinis

Women's Wetsuits & Triathlon Suits

Women's Plus Size Swimsuits

Women's Apparel

Unisex Apparel (Including Parkas)

Men's Size Charts
Men's Racing Suits

Men's Training Suits & Beachwear (Elasticated)

Men's Beachwear (Non Elasticated)

Men's Wetsuits & Triathlon Suits

Men's Apparel (Including Parkas)

Youth's Size Charts
Girls' Racing Swimsuits

Boys' Racing Swimsuits

Girls' Swimwear

Boys' Swimwear

Youth Unisex Apparel

Fins Size Charts
Powerfin Pro Fins
| International | USA | Europe | UK | AUS |
|---|---|---|---|---|
| 36–37 | 4.5–5 | 36–37 | 3.5–4 | 3.5–4 |
| 38–39 | 6.5–7.5 | 38–39 | 5–6 | 5–6 |
| 40–41 | 8–9 | 40–41 | 6.5–7.5 | 6.5–7.5 |
| 42–43 | 9.5–10.5 | 42–43 | 8–9 | 8–9 |
| 44–45 | 11–11.5 | 44–45 | 10–10.5 | 10–10.5 |
| 46–47 | 12.5–13 | 46–47 | 11.5–12 | 11.5–12 |
Powerfin Fins
| International | USA | Europe | UK | AUS |
|---|---|---|---|---|
| 33–34 | 3–4 | 33–34 | 1–2 | 1–2 |
| 35–36 | 4–5 | 35–36 | 2.5–3.5 | 2.5–3.5 |
| 37–38 | 6–7 | 37–38 | 4–5 | 4–5 |
| 39–40 | 7.5–8.5 | 39–40 | 6–6.5 | 6–6.5 |
| 41–42 | 8.5–9.5 | 41–42 | 7.5–8 | 7.5–8 |
| 43–44 | 10–11 | 43–44 | 9–10 | 9–10 |
| 45–46 | 12–13 | 45–46 | 10.5–11.5 | 10.5–11.5 |
Junior Fins
