Each of our Smart Tech Layflat poly bags are made in America of 100% Virgin Low Density Polyethylene (LDPE) resin that meets FDA/USDA specifications. Smart Tech Bags are engineered to provide over three times the impact and twice the tensile strength of traditional low-density polyethylene bags. Manufactured with either a durable bottom seal or an extra strong side weld for optimal strength. This premium bag features superior clarity for showing the quality of your products. All listed gauges are nominal. Can be heat sealed, tied, stapled or taped shut.