IST Sea Diver Rubber Fins / Flippers with Closed Heel for Scuba Diving, Snorkeling, Swimming FLEXIBLE FINS  Flexible and powerful for easy kicking. QUALITY MATERIAL  Durable rubber is longlasting and comfortable to wear. MINIMAL DRAG  Open toe box for easy drainage that doesn't slow you down. JET POWER  Traditional paddle fins with ribbing to channel water for extra propulsion. PERFECT FOR BEGINNERS  Available in sizes 4XS to XL for kids and adults.