Crossrock is a brand founded in 1998 and has been dedicated in great quality and affordable design of musical instrument bags and cases for almost 20 years. As an expert of musical instrument bags and cases, Crossrock offers a wide range of products with a variety of available sizes, materials, and protection levels, for all types instruments, and it makes sure almost all your needs can be found in one brand. The CRF1000TR case is designed for most regular Bb trumpets. The compact design and strong fiberglass shell makes sure its convenience and safety in travelling. The inside dimensions: Length: 47.5cm (18.7”) Width: 15.5cm (6.1”) Height (for bell): 15cm (5.9”) The outside dimensions: Length: 53cm (20.9”) Width: 20cm (7.9”) Height: 19cm (7.5”) The trumpet case weights 1.83kg (4lb) The package include: Crossrock CRF1000DTR fiberglass trumpet case x 1 Backpack straps x 2 Key x 1