Ally Floating Swim Fins are the perfect combination of comfort and power providing the ultimate solution for your swim fin needs. Made of the finest quality natural rubber designed for body boarding and bodysurfing Its soft foot pocket with stiff blade offers increased acceleration and super fast take offs making it easier to catch waves. The bat tail like blade with two rods for maximum thrust and power. Traction bottom with breather hole at the bottom of the foot pocket for proper drainage which allows sand and broken shells to circulate out. Ally"s feature a curved Ankle strap which decreases irritation and the chance of ulcers on the ankle ball. Improves comfort. Did we mention they FLOAT in salt water?.