Internal Dimensions DEPTH (inches) 18.5 DIAMETER (inches) 21 600 Denier Polyester Exterior Weather-Resistant Reinforced traditional handles Additional SHARK GIL side handles DX-CORE Padding: 3 layers of high-impact laminated foam padding and a soft interior lining of premium Sherpa Fleece. Patented TRUFORM: Designed to fit the “”True Shape”” of the drum plus its mounting hardware. Patented DYNAZIP: Cutaway Design that travels along the diameter of the case as well as down both sides of the Truform cutout. Heavy duty reinforced “”Corner Bumpers”” designed for impact protection.