U.S. Divers Adult HingeFlex II Adjustable Fins UNISEX - US SIZE:M 4 - 8.5 / W 5 - 9.5 (S-M) Sock-liner is designed to give

Sock-liner is designed to give your foot a close

Lighter and more responsive than ever while delivering the same maximum stability it's beloved for

Drawcord with Champion branded metal tips

seamless fit

U.S. Divers Adult HingeFlex II Adjustable Fins UNISEX - US SIZE:M 4 - 8.5 / W 5 - 9.5 (S-M) Sock-liner is designed to giveU. S. Divers Adult HingeFlex II Adjustable Fins Product Description Experience optimum speed without fatigue with the Hingeflex fins. The Hingeflex fins incorporate Pivot Flex technology with a detached foot pocket and a webbed split fin designed to deliver power while reducing foot and ankle fatigue. With a compact design, the Hingeflex is a great travel fin that comfortably fins in your vacation luggage. Pivot Flex Technology The Hingeflex fin uses