Super soft, 250% stretch neoprene provides a “melt in your hand” feel. Aqua Silk lining on all interior panels. Larger neoprene panel and minimized seams keep cold water out and warm water in. Double glued and double sewn seams (interior & exterior) provide longevity, durability and performance in the most demanding conditions. Integrated self sealing spine pad. Every Thermoprene Pro wetsuit style is designed, patterned, cut, sewn, fitted and tested in the USA, prior to any production manufacturing. Sophisticated styling with a technical edge YKK #10 zipper with colored teeth and Stainless zipper slider. DuraTex stretch knee pads provide long lasting durability, enhanced flexibility and comfort. Significant improvements in comfort and flexibility will be one of the most noticeable enhancements found in the new Thermoprene PRO line. Now boasting a full 250% stretch; a significant improvement over the 180% stretch of the original Thermoprene material.