ONeills Psycho Tech combines O' Neill's exclusive Techno Butter 2 neoprene with Techno Butter 2-Air Firewall insulation Single Fluid Seam Weld & a F.U.Z.E. Closure System. Lighter warmer more insulating & quick drying with enhanced ease of entry. The Psycho Tech is the latest advancement in cold water wetsuit technology from the leaders in innovation for over 60 years. :: Men > Wetsuits. Technobutter 2 neoprene: Extremely light with unparreled freedom of movement whilst retaining phenomenal amounts of warmth External Key pocket with loop: Located along the lower leg inseam. it has been constructed with Fluid Seam Weld Single fluid seam weld: Non-chafing high-grade. silicone-based urethane applied in liquid form to outside of a glued & blindstitched seam Technobutter 2-air firewall: Identical features to Techno Butter with the addition of air technology Men's wetsuit Krypto knee padz: Abrasion resistant. high stretch neoprene panel with ergonomic shaping for comfortable durability Thickness: 4/3mm Super seal cuffs: A bonded low profile cuff seal that keeps water out Strategic seamless paddle zones: An ergonomic. seamless under sleeve panel that allows for unrestricted motion Techno Butter Air technology is a complex 3D structure of neoprene & trapped air for superior warmth Double super