Bungee Strap - Elastic bungee strap for quick donning and doffing of the fin; Anatomic Fin Strap - Tusa's fin strap design for improved comfort and stability; Angled Blade Design - Angled fin blade lengthens the stroke of the kick cycle; Packable, light weight, great for carry-on travel; A compact blade design that produces big power; The perfect fins for both diving and snorkeling; A fin blade "Utility attachment point" ideal for carrying and stowing; The "Round Edge Structure" foot pocket provides the softest, most comfortable barefoot experience; An ultra-soft and flexible monoprene foot pocket conforms to most foot shapes; A highly elastic Bungee Strap secures the foot and requires no adjustment