Extra heavy-duty Poly Bags are puncture resistant and recommended for protecting heavy weight products like industrial parts and tools from dirt, dust and moisture Bags are manufactured from 100% virgin, high clarity polyethylene film. Meets FDA and USDA specifications. Close bags with twist ties, bag tape or by heat sealing. Office Depot Brand 6 Mil Flat Poly Bags 14in. x 16in., Box of 500 is one of many Poly Bags available through Office Depot. Made by Office Depot.