O'Neill's Epic full wetsuit now includes many of the same popular features as the company's high-end Psycho Series, such as a 100% UltraFlex neoprene, double seal neck closure, LSD (lumbar seamless design) and a re-engineered covert blackout zip that greatly reduces water entry.Other comfort and convenience enhancing perks include:Smooth Skin FluidFlex FirewallKrypto Knee Padzan external key pocket with loopglued and blind stitched seamsupdated Velcro closurestrategic seamless paddle zonesLSD (Lumbar Seamless Design)Surfers spend significant amounts of time sitting on their boards; by using a single large panel in the rear area of the wetsuit, water entry is further minimized and stretch is maximized.Strategic Paddle ZonesAn ergonomic, seamless under sleeve panel allows for unrestricted motion and eliminates rashingKrypto Knee PadzAbrasion-resistant, high stretch neoprene panel with ergonomic shaping designed to extend the life of the wetsuit and protect the knee while punching through wavesExternal Key PocketLocated along the lower leg inseam and constructed of Ultraflex DS neoprene, this new key pocket is easy to access and completely secure100% Super StretchMade of 40% UltraFlex DS and 60% FluidFlex materialsFirewall InsulationO'Neill's lightweight thermal insulation jersey wicks away moisture and increases warmthGBS SeamsDouble stitched partially through the surface and triple glued to create a watertight seam; tape is added to critical areas