Winterly wet suit in two pieces. 7 mm. Sheico neoprene. Black nylon outside and Satin Plush inside. Iper Stretch insert on hood, armpit cavity and inseams. Heavy nylon disks reinforcements on cross seams. Long John trousers with Supratek reinforcement on knees. Upper part of Long John 5 mm. for ease of breathing and comfort. 5 mm. insert at face, ankles and wrists for best comfort.