O\'Neill Men\'s Hammer 2mm Chest Zip Shorty Men\'s Wetsuit 2022 The O\'Neill Hammer 2mm Chest Zip Shorty Wetsuit is one of our best selling wetsuits due to the high quality neoprene used in this suit which means you get a movement free and warm suit. The price for such high quality is also great too and being a chest zip wetsuit it gives you restriction free movement. Great for all water sports and perfect for those summer days when you plan to be out on the water for a while. Features 2mm Neoprene Thickness 100% UltraFlex DS Smooth skin chest & back Flatlock Stitched (Breathable Seams) Glideskin neck facing F.U.Z.E Entry - Front Upper Zip Entry #10 YKK Zipper