Positive Drive Fins | Four Stroke Training Fins size:L This snorkel is designed to

This snorkel is designed to reinforce head alignment

ISHOF’s SafeSwimmer™ Float comes in two sizes

scale-like finish and additional water-repellant characteristics further reduce drag for increased speed

and securely close the buckle

size up if you are extremely tall

Positive Drive Fins | Four Stroke Training Fins size:L This snorkel is designed toThe Positive Drive Fins (PDFs) 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 PDFs 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