Maximum compatible headset dimensions (case inside): 8.66 x 7.67 x 3.74 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 AKG K845, K540, K514MKII, K512MKII, K511, K167, Behringer HPX2000, Beyerdynamic DT880Pro, DT880, FOCAL utopia, Stellia, Sennheiser RS175RF, HPM1000, HD660s, HD650, HD599SE, HD598CS, HD579, HD569, HD560S HD559, HD280PRO HD 300PRO, HD 300PROtect, HD 400 PRO case. If the case doesn't fit or break within one year, Geekria will replace or refund. No question asked.