De Soto T1 Speedtube - ST2-2017 95% Rubber / 5% Nylon 5mm GreenGoma #8 Rubber with Yamamoto SCS (Super Composite Skin) for maximum buoyancy without compromising speed. Seams are glued and blind-stitched, making them more durable than the rubber itself. Less-toxic bonding agent for people with skin sensitivities. 5-panel contour design for an exceptional fit. Lined with 4-Way stretch Nylon Lycra for comfort and to minimize chafing. 5-panel contour design for an exceptional fit. Shin cut high for easy fitting and removal. Heavy duty drawstring waist allows adjustability. Can be worn alone or with any First Wave or Black Pearl Pullovers and Vests. Sleek graphics, no gimmicks. Sold as separates for a true customized fit. Chlorine resistant treatment, but not recommend for repeated use in chlorinated water. Made for swimmers and triathletes who have a weak kick and want maximum hip flotation, and or overheat easily in other wetsuits. Please do NOT assumer your size. PLEASE REFER TO THE SIZE CHART IMAGE ON THE LEFT FOR ACCURATE GENDER SPECIFIC SIZING GUIDANCE. STILL IN DOUBT? ASK US.