The Hammer series has a suit for every condition. Exceptional styling, fit and unrestricted movement in each style with 100% super stretch materials. Now all double lined, minimal seam and F.U.Z.E closer. features: F.U.Z.E Closure: Front Upper Zip Entry(Chest) uses the same tech as O'Neills patented ZEN zip closure with drains holes to keep you dry and feeling loose. 100% Ultraflex: Ultra stretch, super soft and premium neoprene for superior feel, flex and high performance. Kypto Knee pads Glide skin inner neck Flatlock Strategic seamless paddle zones.