The Ultra John combines 3mm neoprene with maximum insultaion. Chest panels are plush-lined for additional comfort and warmth. ToughTex seat and armoured knees ensure longevity, and full length double pull YKK front zipper enhances convenience. All seams are glued and blind stitched for comfort and water resistance. The Ultra John provides the best fit, comfort, insulation and durability of any wet suit. No backorders. Sizing Height Weight Medium 5'5-5'8 115-160 Large 5'7-6'0 150-190 X-Large 5'10-6'2 180-205 XX Large 6'1-6'4 195-215 3X 6'3-6'4 215-225