O'Neill Men's Mutant 5/4mm Chest Zip Full Wetsuit with Hood Neoprene Should fit snug, but not too tight Modular closure system with dual Cinch on the neck and hood closures seals out water UltraFlex DS Neoprene TechnoButter Firewall Single fluid seam Weld (Watertight stitchless Technology) LSD: Lumbar Seamless design