1. Use imported 0.9 mm thickness-PVC Material, which is waterproof, prevent wear, radiation protections. Korea PVC material extremely good abrasion resistance. 2. Adopt imported valves, convenient and safe and reliable. 3. All adhesive parts imported glue, peel strength and high-temperature resistance, hydrolysis, anti-ultraviolet radiation properties are much better than domestic glue. Long :295cm~550cm , Net weight:55~180kgs Gross weight:60kgs~188kgs Has got CCS and CE passport