Maximum compatible headphones dimensions (case inside): 8.07 x 7.09 x 3.94 inches. Compatible with many wired / wireless headphones. Engineered ultra-hard shell protects against drops, impacts or crushes. Soft inner maximize headphones protective in the case. Internal mesh pocket conveniently stores cables, cords, chargers, AMP, earpads, adapters and other accessories Compatible with Sennheiser PXC450, HD650, HD600, HD598Cs, HD598, HD595, HD558, HD555, HD518, HD515, HD449, HD439, HD429s, HD429, HD419, HD380Pro, HD280Pro, HD 400 PRO, HD280 HD202II HD201 case. A good replacement or upgrade of the original headphones case. If the case doesn't fit or break within one year, Geekria will replace or refund. No question asked