Heavy Duty Clear Backpack Durable See Through Student School Bookbag Quality Transparent Workbag Easy Stadium Security Check Bag Daypack Black Clear Backpack made in Super heavy duty 0.5 mm Clear PVC, at least 50% thicker than most other regular clear backpacks. Transparent Bookbag with Completely see through all around, including back and bottom. "Praise Starts" and "All-Fine" are the only registered authentic seller of this K-Cliffs Heavy Duty Clear Backpack, all other sellers are NOT authorized. If you buy from other than "All Fine" and "Praise Starts", BUY AT YOUR OWN RISK, whatever you going to receive or whether you will receive your product is not guaranteed. Heavy Duty Clear Workbag Backpack with Clear organizer in front pocket. Clear Safety Security Check Backpack, Super Spacious, plenty of room for books and other stuffs. Quality See Through School Book Bag, Heavily Reinforced shoulder straps for extra durability.