🎧Only compatible with QC35 and QC35 ii over-ear headphones. Does not fit QC15, QC25, QC2, AE1, AE2, Soundlink, SoundTrue, NC700, or any other model headphones. 🎧Our ingenuity lies in using 3D printing technology to precisely replicate the original headband's shape, eliminating the embarrassment of using a headband wrapping cloth. 🎧EASY INSTALLATION: Our product seamlessly fits your QC35 headset by snapping the internal hook into the slot, without disassembling the headset's sound unit. 🎧The headband features a high-quality protein leather and fiber nylon outer layer, with high-density foam on the inside, delivering extreme comfort and long durability. 🎧We are continuously developing more professional and ergonomic headphone accessories. Please feel free to contact us at any time if you encounter any issues with your purchase. Headband Kit Replacement