... layer corrugated paper sheet to wrap outside 3. Cushion is packed in a PE bag. 4. ... ¢3mm,4mm 5mm,etc3. cushion &foam: easily remove cushion with 30 high soft density foam, waterproof and zipper.all weatherproof ... course can offer to you after patented, and support your market requirement 7.we would have the ... cleaner, avoid using a foaming product, as foam cleaners can leave residue in the gaps of ...