Chest zip entry system: This design offers more flexibility and a better fit, with the YKK zip allowing for easy on and off and the ability to adjust the fit. The chest zip also helps to keep the wetsuit sealed and in place for better warmth. This type of wetsuit is often used for cold water activities such as surfing, diving, windsurfing and other water sports..Glued and Blindstitched Seams: designed to prevent water from entering the suit by using a strong and flexible stitching method, Flexloc Stitch, and triple-gluing the seams. Even if the thread breaks, the seam will not leak, providing greater warmth and comfort..FluidFlex Firewall: includes thermal lining in the chest, back and lower body, to retain body heat longer. This lining also features big loops to create a high pile that holds air for extra insulation, resulting in less water retention and faster drying for better warmth and comfort..Double superseal neck: Uses a two-layer design to provide extra warmth and a secure fit. The design includes a 360-degree smooth skin interior lining, wide adjustability, and a secure lock-down mechanism. This allows for full adjustability and a watertight seal, keeping the cold water out and the warmth in, providing added comfort and warmth..Waterproof Stretch Taping: uses a highly durable taping in crucial areas of the wetsuit to prevent leaking and maintain flexibility and warmth. This taping is applied in the areas that are more prone to leaks and stress to ensure the suit is secure and comfortable to wear, and prevent cold water from entering the suit.