4/3mm mens winter neoprene smooth skin wetsuit 1.mesh skin on chest & back ... . 2.smoothskin collar for flexibility Item:YKMTM002Description: 4/3mm mens winter full wetsuitMaterial:neoprene, nylonSize: XS,S,M,L,XL,Feature ... knee pads6.glued & blind stitching construction 2012 4/3mm mens winter neoprene smooth skin wetsuit