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 CRF1000AS case is designed for most regular alto sax. The compact design and strong fiberglass shell makes sure its convenience and safety in travelling. The inside dimensions: Effective length: 48cm (18.9”) Length of crook rest space: 12cm (4.7”) Max width: 21cm (8.3”) Max depth (for bell): 12.5cm (4.9”) The outside dimensions: Length: 62.5cm (24.6”) Width: 23cm (9”) Height: 15.5cm (6.1”) The alto saxophone case weights 2kg (4.5lb) The package include: Crossrock CRF1000AS fiberglass alto sax case x 1 Backpack straps x 2 Removable accessory pocket x 1 Fixed accessory pocket x 1 Key x 1