artstrong bags are the most durable bags in the marketplace. Created with 5X the protection of normal bags, artstrong bags start with two layers of polyethylene bubbles sandwiched between one layer of fire retardant metallized polyester film and one layer of white polyethylene. Then we use shock-absorbing polyethylene foam that is filled with thousands of air cells that are resilient, anti-lint/dust/static free. The inside is lined with a superbly soft technologically innovative fabric that resists scratches and snags. Finally, our bags are sewn at the edges and reinforced with tough nylon to provide the most secure edges. We mean it when we say we’re artstrong!