Electronics, personal items and firearms are damaged from exposure to the environment. aLOKSAK is the only re-sealable, flexible storage bag offering protection from all the elements. The patented, light-weight storage system prevents air, humidity, water, dust and sand from harming your valuables. aLOKSAK can also ensure your treasures are safe from the passage of time. MILITARY GRADE: These bags are used for safe element proof transport and storage by outdoor enthusiasts, all branches of the U.S. and Foreign Military, and by many governmental and law enforcement agencies worldwide!