Fine tune your swim stroke with the help of the Dolfin(R) Feedback Swim Paddles! These feedback swim paddles encourage the perfect stroke by providing immediate feedback through the pull phase of your stroke. Tailor their resistance to your ability level for a custom-built training session this swim season! FEATURES: Feedback swim hand paddles Provide immediate feedback through pull phase of stroke Encourage the perfect stroke Allows you to tailor resistance to your ability level Increase skill level of flaps to tune your stroke