The aLOKSAK is an element-proof storage bag that prevents leakage and preserves items against damage from water, air, dust and humidity. Memorabilia placed inside aLOKSAK bags does not age. These bags are made of a durable polyethylene blended film and are 100% waterproof to over 70 meters. aLOKSAK can be opened and resealed numerous times. Our bags are considered disposable must be replaced after extended use.  Both the aLOKSAK and OPSAK can be cleaned with soap and water.