TYR Sport Inc, TYR Flex Fins All Diving >>> Diving by TYR Sport Inc More details and ordering info. Flexfins are designed to increase leg strength as well as foot flexibility. Color coordinated by size for easy identification. Strap these fins on your feet and watch as your performance skyrockets (For female equivalent , size down 1-2 sizes) User input on TYR Flex Fins by TYR Sport Inc: Be the first to submit input on this product Submit Input: Your Name: Write or Paste Input here: Upload picture:      Review Guidelines