Wham-O Churchill Fin Tethers The Churchill neoprene ankle tethers fit any swim fins to reduce risk of losing your fins while riding the waves The CHURCHILL Ankle Tethers is made of comfortable neoprene cuffs and uses Velcro for quick fastening and de-fastening The tethers easily attach and are made of tough urethane to assure that your swim fins are always connected A high performance ankle tethers with super strong Velcro and is strong but gives for riding the waves Don't lose your swim fins when boogie boarding with the Churchill Swim fin Tethers