The Positive Drive Fins (PDF’s) use a unique ellipsoidal blade to generate correct propulsion in all four swim strokes. The asymmetrical blade design allows the swimmer to build power while promoting a natural inward supination kick style for butterfly, backstroke and freestyle. The PDF’s use an ergonomic foot pocket to comfortably place feet in an ideal swimming position. The heel strap secures the fin, allowing feet to flex more naturally. A closed toe design provides superior energy transfer from leg to foot. The The Positive Drive Fins will increase leg strength, foot speed and ankle flexibility for all four swim strokes, making the fins great for individual medley training. For more information, please see our Training Fins Reference Guide or our Kid’s Fins Reference Guide. FEATURES UNIQUE BLADE DESIGN Ellipsoidal blade generates correct propulsion in all four swim strokes – even breaststroke ASYMMETRICAL FINS Blade shape promotes a natural kick cycle EFFECTIVE TRAINING Increases leg strength, foot speed and ankle flexibility – Great for training the individual medley event; Safely build a powerful breaststroke kick ERGONOMIC FOOT POCKET Comfortably places feet in an ideal swimming position ADJUSTABLE HEEL STRAPS Create a customized fit that secures fin and allows feet to flex more naturally ADDITIONAL INFORMATION Product Info Sheet Training Fins Comparison Charts Training Fins Reference Guide Kid’s Fins Reference Guide FAQ’s Size Chart PRODUCT VIDEO
