Aqua Sphere's premier wetsuit. Male fit. Core Power System: Internal-adjustable belt support - improves posture enhancing hip rotation and lengthens stroke Bio-Stretch Zone: Strategically placed 1mm stretch zone - allows for max range of motion Auto Positioning Sleeve: 5mm band - encourages high elbow position on pull phase of stroke. Power Zone: Strategically positioned sections of the forearm, externally coated with a super-stretch material engineered to increase traction during the pull phase of the stroke, maximizing forward propulsion. Grip Protection System: Specially designed fabric application that minimizes friction and creates a shield over the wet suit in order to maximize the life of the suit. Aqua-Grip Cuffs: Specially designed seal around the wrist and ankle cuffs keeps water out. Quick Drying 100% UVA/UVB Protection Super Stretch Fabric Yamamoto #39 SCS Material: Yamamoto offers the optimum balance of flexibility, reduced drag coefficient, and durability. The SCS coating offers the lowest drag coefficient available and maximizes speed. Thermo-Guard: Thermo-Guard technology provides warmth and maximum flexibility and range of motion in the shoulders, legs and chest.