Meister MMA Convertible Backpack / Duffel Vented Gym Bag Holds Every Piece of Gear you Use - Dimensions: 26" x 12" x 12" Converts from Duffel Bag to Backpack in Seconds / Shoulder Straps Tuck Away Into Hidden Pockets The Perfect Airplane Carry-On Bag - Maximum Size Mesh Lining Allows Air Flow / Side Pockets for Your Accessories Meister MMA Crowned M Stands Out in a Crowd