Henderson Thermoprene 5mm Back Zippered Men's Jumpsuit The Material Combination with a High Quality Nylon 2 Neoprene Delivers Greater Flexibility and Durability Adjustable collar and Back Zip with Comfort Seal All Seams Are GBS-Glued and Blind Stitched 5 mm Thermoprene; with a Flex Knee Pad Ideal for Local Waters and Exotic Destinations