O'Neill Wetsuits Men's Hyperfreak 1.5mm Long Sleeve Crew Should fit snug, but not too tight 1.5mm TechnoButter Neoprene: Advanced super stretchy, 20% Lighter, 30% Less Water Absorption Front Upper Zip Entry (F.U.Z.E.) Closure System is an ultra-dry 3x water drain system that keeps you dry without restricting flexibility Double Super Seal Neck: Fully watertight to keep you warm and dry Minimal Seam Design: Insane flexibility, fit and warmth using a unique design which utilizes less seams Newly redesigned