These ammo crates are designed for both short and long-term storage for your ammo, firearms, survival gear or pretty much anything else. The high-impact polypropylene plastic construction is built for durability and will withstand the test of time. Each of these ammo crates features four hook points for ATV attachment and molded-in stacking ridges, allowing you to stack numerous crates on top of each other. In fact, you can stack them all the way to the ceiling! MTM's tongue-and-groove O-ring seal system keeps the water out (don't submerge) and your storage materials dry. You can even pad lock them to keep the contents inaccessible to kids or unscrupulous guests. Use them to store tons of rifle and handgun ammo or up to 20 boxes of 12-gauge target loads. If you're looking for more inconspicuous storage options, their compact height allows them to be stored easily on your closet shelves or under the bed. Best of all, each one is proudly made in the USA.