Curtis Bags Ripstop Trombone Mouthpiece Pouch - Quad One Size Black Please compare your instrument size with our case size before purchasing. We do not accept return requests due to size issues. / A signatory is required upon delivery of the item. Size (Inches) : Width : 7.1 x Length : 4.7 Details : Very soft padding / Basic Instrument Kit / Mouthpiece organizer Country of Origin : South Korea The size may differ by 0.2-0.4 inches depending on measurement methods. / The color displayed may vary depending on your screen.