Designed to catch spent shell casings ejected out of a vehicle-mounted .50 cal machine gun. As seen riding in WWII-era tanks, jeeps or even Air Force bombers. A cool conversation piece to keep gear handy at the gun range. Not to mention a real piece of military history for your collection. Each measures a generous 24" x 11" and conveniently opens from the bottom with a zipper or the top using a drawstring.