Fits T500BT, TUNE600BTNC, and T450BT models with sponge replacement to refresh headset cushions for extended listening sessions. Benefits at a glance Comfort upgrade: renewed softness and a secure fit for long listening periods, helping reduce ear fatigue. Soft and durable replacement: replaces wornout ear pads without compromising comfort; gentler touch on the ears than original pads to improve wearability for music and calls. Protein leather and elastic sponge: soft protein leather with elastic sponge creates a comfortable barrier that helps reduce external noise and supports clearer perceived sound. Daily use and hygiene: suitable for commuting, home, or office use; helps maintain headphone hygiene while providing ongoing comfort. Compatibility and materials Compatible with T500BT, TUNE600BTNC, and T450BT headsets. Made from protein leather and elastic sponge for lasting comfort and performance. Use scenarios Commuting or travel: enjoy long listening sessions with improved comfort and reduced fatigue. Home or office: maintain hygiene and comfort during extended music playback or calls. General daily wear: upgrade worn pads to restore fit and sound clarity across everyday use. This description keeps the original models, function, and material emphasis, and presents the benefits in a clear, customerfriendly format.