SIZE CHART Actual fit may vary. Recommendation based on use of 5 mm boot with average sole. If you are in between sizes and have a wider foot or thicker soled boot we recommend selecting the larger size. If you have a narrow foot or thinner boot we recommend selecting the smaller size. Weight per pair, varies slightly with color and strap.
| Fin Size | Mens | Womens | Dimensions | Weight | 
|---|---|---|---|---|
| M | 8-9 | 9-10 | 560x234mm | 2930g | 
| L | 9-11 | 10-11 | 560x234mm | 3080g | 
| XL | 12-14 | 12+ | 560x234mm | 3130g | 
Features
Using a compound that is up about 15% higher hardness compared with original Bio Fin Pro improves the kick feeling and instantaneous force against the foot . Propulsive efficiency for the overall input power will fall slightly from bio-fin pro but the difference is very slight.
- Blade at 20º angle reduces strain on joints 
- Easy finning for all levels of fitness 
- Effortless power without muscle cramping 
- Increased maximum speed, reduced fatigue 
- Up to 40% reduced muscle fatigue, energy output and air consumption; longest recorded bottom times in testing 
- Open toe for additional comfort 
- Manufactured In Japan 
 
                         
         
        