The typical wooden cases sold by the bell manufacturers usually aren't sturdy enough to withstand very much travel. Port-a-Bell ® cases are made of heavy duty polyethylene. This makes them lighter weight and more portable than your current cases. Other features include ball-bearing recessed wheels, recessed latches, full length piano hinge, separate combination lock and a recessed three stage telescopic handle. The interior is precision cut, closed cell foam, which doesn't absorb moisture.