Zipper closure Quantum Foam Neoprene - light weight & super stretchy Microfleece Lining - fast drying & super warm GBS Sealed Seams added durability & water resistance Duratex Kneepads anti-abrasion but won't inhibit movement GlideSkin Collar anti-rashing & water resistance The Hyperflex VYRL 4/3mm back zip mens wetsuit is a light-weight, warm, high-performance wetsuit. Its ideal for surfing, shallow water diving and is an excellent multi-sport wetsuit at a much lower price point than comparable suits. It features 100% stretch Quantum Foam neoprene, minimal seams and a quick-drying, micro-fleece lining. Overall, it is a soft and comfortable full suit that conforms to your body and ensures excellent range of motion. Other reasons you will love this suit include: GBS (glued and blind stitched) sealed seams for durability and water resistance, a GlideSkin collar to reduce chaffing, and Duratex kneepads for abrasion resistance without inhibiting your movement. Simply put, this performance wetsuit is smartly designed using the latest technology and gives you an incredible bang for your buck!