The Pro Tec Trumpet Case will hold two mouthpiece and features an area in the case for mutes or other large accessories. The case has a padded shoulder strap, and additional hooks that can turn the case into a backpack (backpack straps not included). The exterior is made of water resistant nylon and the interior has a velvoa lining. Comfort Features Quick-lock closure Backpackable with optional backpack strap (model #BPSTRAP) Includes padded shoulder strap and ID tag Interior Features Lightweight shock absorbing frame Soft non-abrasive velvoa lining Accessory compartment Exterior Features Exterior pocket, oversized Built-in organizer to hold pens, keys, and small accessories Nylon exterior, 1680 gauge ballistic, water and abrasion resistant Compatible with optional rain jacket (Model # RAIN2) Exterior Dimensions: 9.00(H) x 22.05(W) x 10.50(D) Weight: 6.00 lbs. Front Side Pocket Dimensions: 8.00(H) x 21.75(W) x 2.00(D)