Identical spec as the 3/2 but with a thicker neoprene for those deep winter sessions when warmth is a key factor to your enjoyment. Thickness 5mm with 3mm Features *YAMAMOTO Neoprene all through *Inside batwing panel for water prevention and comfort (this super stretch panel is also velcro proof) *Taping on all stress point areas and super stretch crotch *Mega-stretch neoprene on all crotch and underarm panels *Solid metal PK zippers with spring pull *Extra length on the cuff and leg length for extra comfort *Wrap around panels on the forearm for added comfort *Stretch panel on reverse at base of spine for comfort and fit Sizes: Small, Medium or Large