Strong Polyethylene bags have inside dimensions of 8' x 11.5' Outside Dimensions: 8' x 12' is bubble cushioned to provide a layer of protection Bulk packaging discount pack of 700 for mailers and shippers Selfadhesive seal and peel with all in one packaging feature 3/16' Bubble Cushioning Exterior Polyethylene is strong and resistant to weather, puncture, and tampering