Super soft, high stretch neoprene. Fire Fleece lining. Double glued and double (interior & exterior) stitched seams provide longevity, confidence, and performance in the most demanding conditions. Hendersons patterns have evolved over 50 years from USA standards. Every TherMAXX wetsuit style is patterned, cut, sewn and fitted in the USA, prior to any production manufacturing. Sophisticated styling with a technical edge. Velcro resistant outer fabric. YKK #10 zipper Titanium-infused lamination adhesive. 10-year Limited Warranty.