Matuse is known for its excellent geoprene - super-stretchy and warm. 1.5 mm gives you enough warmth without sacrificing comfort and flexibility. Perfect for Spring/Summer/early Fall surf, on the mainland. Perfect for year-round surf in tropical areas. Reversible navy blue to black. Black side is perfect, no wax. Navy blue side has little bit wax on the zipper area and elbows - it's a surfer thing. Cheeky tanga cut for a sexy tan line. Always worn with a bathing suit underneath.