New, unopened, set of 3. This is a cushioning material, Petit-Petit-kun, that fits perfectly into square No. 3 envelopes, ideal for transporting and storing fragile items. It can be used repeatedly. Perfect for CDs, DVDs, books, etc. By using approximately 15% sugarcane-derived polyethylene as a raw material, this environmentally friendly cushioning bag can reduce CO2 emissions by more than 5% compared to before. Packing materials, flea market, auction, bubble wrap envelope.