Super tough, high-stretch dry bags that are water resistant up to 60 meters/200 feet. They are airtight, dust, dirt, and waterproof. Creates a hermetic seal that blocks all odors and bacteria. Approved by the U.S. Navy Experimental Diving Unit. Used for safe, element-proof transport and storage by outdoor enthusiasts, all branches of the U.S. and Foreign Military, and by many government and law enforcement agencies worldwide!