... durable coated PVC material, seam reinforcement strap to extend its long use life span, reduce air leakage rate from pinhole ... Climbing sectionwith durable coated PVC material, reinforced stitching to pack long strip or square hard sponge, light but strong enough to ... All my package is firm and tidy, strong enough to long distance transport. Air blowerincluding free charge CE or UL Certificated air ...