... change the component,will cause different specification,Neoprene series:CR series: 100%CR Used for diving suits, surfing suits, etc. SCS series ... : CR+SBR Used for cooler, bags, and sports goods SBR series: ... boots,wraps, pads, soft cases, & luggage shoulder straps etc . SBR,CR Neoprene Rubber,Neoprene rubber Sheets