V-Zip Complete Closure does 3 things. Increases range of motion with minimal layers around neck and shoulder region thus making it much easier to paddle in. Makes the suit easier to get on and off than any chest zip on the market. Completely seals the entry shoulder to shoulder to prevent flushing. Anatomically engineered 3D body paneling for amazing fit. WARMTH & STRETCH 100% I-Foam neoprene – the lightest weight” warmest & stretchiest Japanese limestone based neoprene available; significantly less weight” enhanced flexibility and superior comfort. I-Foam contains Recycled oyster shells” Recycled rubber” and Eco-carbon black. The most flexible high-performance jersey used in any of our wetsuits. Recycled Ridiculous Rubber! So stretchy its crazy! We’ve designed this suit to have the softest” stretchiest upper torso and arms to allow an unrestricted full range of motion. Body Panels include Recycled Rebound jersey : Eco-friendly” lighter” flexible” anti-fade stretch jersey made by Bluesign approved mills. Thermal Fever Fiber lining with more stretch insulates heat and dries fast. FIT Most flexible” lightest chest zip available by Vissla – Improved fit for better range of motion. Anatomically engineered body lines with minimal seams allow for unrestricted performance and warmth DURABLE & WATERTIGHT V-Zip complete closure to prevent flushing our most watertight design. Tripled glued” blind stitched seams. Stitch-less outer arm seams for superior stretch. Vissla super stretch Neo 3.0 tape allows for maximum seam sealing while having unrestricted stretch and comfort. Easy access secure key cord. Knee pad” Upcycled Supratex abrasion resistant for flexibility and strength. Liquid tape cuff seals to prevent flushing at cuffs. Glideskin on the neck seals to skin to prevent flushing.