This is transparent air cap (bubble wrap) packaging material. It is ideal as a cushioning material when shipping items on Mercari, Yahoo Auctions, etc. 【Size】 ・Length: 29cm ・Width: 20cm ・Equivalent to A4 size 【Condition】 Unused, but please refrain from purchasing if you are sensitive to items stored at home. 【Uses】 ・Cushioning material when shipping items on flea market apps ・Protection packaging for small items ・Packaging for books, CDs, etc. A4 size compatible, 100 sheets 4cm fold-over Has tape to seal the opening Waterproof, compatible with Yu-packet, Click Post, Yu-mail, Kuroneko DM-bin. For mailing, shipping, envelopes, packaging materials, earthquake-resistant, with bubble cushioning material.