Our clear security backpacks are made out of strong .30mm crystal clear PVC with blue PVC piping and 2 each. Each of these backpacks also have a smaller pocket on the front of the bag to help keep smaller items organized and easy to find. Best of all, these backpacks are CPSIA compliant. Details:Clear13" W x 17" H with a 6" open side, top, and bottom gussetOutside front pocket measures 9" W x 5" H with a 1.5" gussetSet of 2Strong nylon adjustable shoulder strapsPVC, Nylon