Features: Precise design: Accurately fitting the headphone headband, perfectly adapting, and maintaining original appearance and functionality after installation. Breathable and sweat wicking material: Comfortable and breathable mesh fabric, it accelerates air circulation and can maintain freshness even after long time wear, avoiding stuffiness and discomfort. Detachable and easy to clean: Supports water washing and quick drying design, easy removal of stain, solves the problem of traditional head beam cover hiding dirt and grime, and is more hygienic and safe. Buffer decompression protections: disperses head pressure, reduces the pressure on the headband, and enhances comfort. Smooth opening and closing: Using zippered closure, with the characteristics of no shaking, no accidental opening, and no abnormal noise, making smooth opening and closing more comfortable. Specifications: Material: Mesh cloth Color: black, gray Unfold Size: approx. 22x9.2cm/8.66x3.62inch Applicable model: Suitable for hd660s2 Headphone Package Includes: 1 Piece Headphone Headbeam Pad Protective Sleeve note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.