The MTM RF22-LM-10 22 Round Flip-Top Rifle Ammo Box is a durable and lightweight polypropylene storage solution designed specifically for holding 300-375 Rem Ultra Mag ammunition. Its rectangular shape and solid green color make it both functional and visually appealing for hunters and sportsmen. The convenient lift-off lid and stackable design add practicality to its use, making it a reliable choice for organizing and protecting your ammunition in the field.