Our Bulletproof Cases are made with military grade heavy duty materials that are constructed to be indestructible with lockable case that is perfect for airport travel. Our case features a watertight o-ring seal is completely waterproof and can be submerged in shallow water. We have incorporated an automatic release valve so you are able to equalize air pressure while traveling between different elevations. Our cases are built with comfort in mind to be extremely durable with a retractable handle & wheels for easy transport. The custom fit foam holds drone, tablet, extra batteries, controller, memory cards, extra propellers & more. With ample space, external dimensions - 20.47x17.25x9.25 inches internal dimensions - 18.9x14.5x8.07 inches, to keep your investment safe for years to come.