These bags are made of high-quality fire-resistant silicone-coated fiberglass and fireproof non-woven fabric laminated with fiberglass fireproof cloth. It has 4 layer non-itchy durable fabric, fireproof zipper, code lock design and strong handle, to add storage security and safety. Price drops from $39.99 to $19.99 when you apply the coupon code "06075UXT" at checkout. Shipping is free for prime members or on orders over $25.