Max total length is 25.5. The internal nesting compartment is Styrofoam with black plush lining. Other models may fit but it may be necessary to compress or remove the Styrofoam insert and cut away areas that touch or hit keys, thumb rest, key guard etc. If any alterations are completed on the case, it is not returnable. There are 4 separate internal compartments to hold the mouthpiece and 3 open slots for accessories etc.
There is also a large (7.5" by 14.5") external compartment for miscellaneous accessories. This case has back pack straps that nest behind a flap cover when not being used. It also has a deluxe detachable shoulder strap with metal clasps. Outside Dimensions: 5" X 8" X 28.