The TUSA SF0104 Hyflex Switch is powered by PuRiMaX ?Polyurethane Blade System?. The Polyurethane blade provides a quick ?snappy? response to the diver?s every movement. TUSA?s unique ?Vortex Generator? effectively reduces water resistance through the fin stroke normally found on traditional smooth blades. TUSA?s Multi-compound foot pocket increases power transfer to the fin blade. The TUSA Hyflex Switch is equipped with the new Universal Bungee Strap providing extraordinary comfort.Features:Powered by PuRiMaX ?Polyurethane Blade System?Vortex GeneratorPerformance enhancing ?Comfort Foot Pocket?Multi-compound foot pocket increases power transfer to the fin bladeStandard with Universal Bungee Strap (TA0902)Offset Blade DesignTUSA Hyflex System for a compact and lightweight travel packageTechnology:POWERED BY PURIMAX: The fin blade is made of top quality Polyurethane material that provides a quicker response to movement over rubber and plastic fins.VORTEX GENERATOR: Six (6) performance ridges positioned behind the blade vent reduce resistance, creating a smoother and more efficient kick cycle. Read moreANGLED BLADE DESIGN (A.B.D.): The Angled Blade Design accommodates for this anatomical characteristic and ensures maximum efficiency throughout the kicking cycle.BUNGEE STRAP: The heavy-duty elastic fin strap provides easy donning and doffing of fins.