Military > Fins > Bio-Fin Ranger

Bio Fin Ranger With Spring Strap is a lighter more compact tactical split fin made from 100% natural rubber material designed specifically for Military and SAR operations and are ideal for helicopter and parachute insertions.

  • Features

    • Wide foot pocket designed for use with amphibious and combat boots.  Also well suited for high profile over boots and divers with wider than average shoe size.
    • Tough 100% natural rubber combined with 75º durometer provides exceptional maneuverability and explosive thrust
    • Dynamic split blade technology proven to reduce fatigue and maximize endurance
    • Negatively buoyant, if operator is required to discard, fins will sink to bottom so as not to alert others of operators presence
    • Increase footwear options with alternate size spring sets
    • Adjustable Rubber Strap with quick release buckles
    • Special Order Only, CALL for lead time
    • Manufactured In Japan
    • Other Options:  Bio-Fin Ranger With Spring Strap
  • Split Fin Technology

    Bio Fins provide lift and propulsion with less effort and more power.  Unlike other fins which push water up and down, Bio Fin blade directs water flow over the leading and trailing edges to provide power, lift and forward thrust on each stroke.


    Efficient Kick A wider kick results in loss of momentum. Whether your traveling at cruise speed or powering through current keep your kicks small.   You will move quicker and more efficiently.

  • Click For Size | Item Numbers









    Thick Sole Over Boot  10-12~, Amphibious & Military Footwear 8~10~**

    423 x 252mm, 1200g, with Rubber Strap


    Bio-Fin Ranger, Rubber Strap, Black Size M-L

    USA# 150-39-80-500 [1503980500, FN08490]

    Thick Sole Over Boot 10~12, Amphibious & Military Footwear 8~10


    Bio-Fin Ranger, Rubber Strap, Black Size L-XL

    USA# 150-39-80-600 [1503980600, FN08491]

    Thick Sole Over Boot 12~, Amphibious & Military Footwear 10~**37]


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