Curtis Bags Ripstop Trombone Mouthpiece Pouch - Double One Size Red 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 : 14.1 x Height : 4.72 Details : Basic Instrument Kit / Scratch protection purse / Trombone mouthpiece pouch 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.