Curtis Bags Tuba Mouthpiece Pouch - Single One Size Gray 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 : 3.1 x Height : 5.1 Details : Pocket size mouthpiece case / Basic Instrument Kit / Vibrant colors / Scratch protection purse 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.