Arms Preservation Anti Corrosion Pistol Storage Bags measure 11" x 15" OD and are designed to prevent corrosion for handguns ranging from subcompact polymer frame semi-autos to full-size metal revolvers during long or short periods of storage. Arms Preservation Velcro pistol storage bags are a convenient solution when there are handguns that are used often or rarely due to the easy-to-use Velcro closure system unlike competing bags that require users to heat seal or zip tie the bag shut. Benefits of the Arms Preservation Bags over similar VCI bags: - Prevents rust for 5 years with constant monthly use and upwards of 10 years when rarely used such as once or twice a year. Similar bags at best will only last upwards of 2-3 years when rarely used. - A.P.I. Gun bags last longer due to the addition of a unique external barrier layer that only allows the VCI chemistry to be off-gassed into the bag while also blocking moisture from the outer atmosphere. - A.P.I. Storage bags create a controlled micro environment rich with anti-corrosion chemistry that also uniquely blocks the external atmosphere from permeating the VCI material which can occur with similar single-layer VCI poly bags. - A.P.I. Gun bags also come with pre-installed Velcro closures that provide convenience as well as additional safety as they can withstand the weight of a firearm keeping it secure inside the bag. Some similar bags use a small press to close zippers whereas most others require the use of zip ties or even a heat sealer to shut the bags. - All our raw materials are sourced in the US and our bags are manufactured with American labor. - Our thick durable materials also provide additional ding and scratch protection in crowded safes cages or racks.