Maximum compatible headphone dimensions (inside): 7.87 x 6.51 x 3.35 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 Audio-Technica ATHM50XWH, ATHM50XBT2, ATHM50XBT, ATHM50XBB, ATHM50X, ATHM50, ATHM40X, ATHM30X 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