Features

Split Fin, Open Heel
Strap Type: Spring
Rubber Heel Protector on spring
Natural rubber blade and foot pocket
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 foot pocket for added comfort
Manufactured in Japan
Demo, Display & Closeout

**Natural Rubber** Bio Fins are the only split fins made with natural rubber. Although a bit heavier in your gear bag, for the purpose of diving, you won’t feel it. Rubber is king! No other material can beat the comfort, flexibility and responsiveness of natural rubber.

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. **Size LL: Fins marked size LL (discontinued) were often referred to as XL. Fins marked size XL (current) foot pocket is significantly larger than LL.


Fin Size	Mens	Womens	Dimensions	Weight
XS	6-7	5-7	504x210mm	2180g
S	7-8	7-8	536x222mm	2480g
M	8-9	9-10	560x234mm	2930g
L	9-11	10-11	560x234mm	3080g
**LL	11.5W+	11.5W+	560x234mm	3080g
XL	12-14	12+	560x234mm	3130g

Bio-Fin Pro With Spring Strap

Features