New AERIS Accel Open Heel Scuba Diving & Snorkeling Travel Fins - Grey with Pink Straps (Size Small/Med-7/10) Angled blade ensures the best angle of attack for each kicking stroke Side rails and center channel direct thrust behind the diver for maximum propulsion Vents at the base of the blade improve water flow down the length of the blade for greater efficiency High-stretch heel strap is fully adjustable and easy to slip on and off Foot pocket posts also accept standard quick-release buckle fin strap assemblies Streamlined foot pocket design accommodates a wide range of boot styles Textured sole provides traction on boat decks and slick surfaces Compact blade is easy to pack and great for maneuvering in tight spaces