All Protection Racket bass drum case internal dimensions will accommodate all fixtures & fittings on your bass drum. We base our measurements on the shell size of the drum and allow for tom arm mount, spurs/legs and drum hoops. So, if you have a 22" x 16" bass drum order our model 1622 - 22" x 16" bass drum case for a perfect fit.Thanks to Propadd P2 foam Our bass drum cases are semi-rigid and do not collapse when open & empty, this ensures easy entry and exit for your bass drum.Super light weighing in at @ under 3.5kilos, Protection Racket bass drum cases make for effortless bass drum lifting and transportation!