Scubapro Definition Steamer 3mm Men's Wetsuit - Black/Yellow - Large Nylon 2-sided X-Foam neoprene formula for better health Body Map System uses specific materials in body panels for extreme warmth and comfort Infrared reflecting heat shield technology on the interior torso and plush lining on the non stretch panels Abrasion resistant StretchTec side panels for durability Angled rear entry zipper for increased flexibility and comfort