Outer material: double-sided laminated PVC mesh cloth, waterproof and oil-proof, super tensile strength, abrasion resistance, strong anti-wrinkle ability; inner material: aluminum foil laminated with non-woven fabric or laminated with 2mm pearl cotton outside with PVC reinforcement, 8mm super-density insulation cotton in the middle; support material: bottom hard rubber board; 2cm high-density super-hard extruded board around and bottom.
