Hyperflex Wetsuits Men's 2.5-mm Amp-3 Back Zip Long Sleeve Springsuit Should fit snug, but not too tight PERFECT FIT: Constructed with 100% Neoprene for an unbelievably stretchy and lightweight wetsuit MULTI SPORT USE: Designed for surfing, paddling, watercraft and many more water and action sports. DURABILITY: Uses flat lock seams for an extra reliable wetsuit for surfers DESIGN: Wetsuit is constructed with a pull over design to avoid needing a zipper.