1. Material: cotton rope, silica gel + strong magnet 2. Function: Prevent accidental loss of wireless bluetooth headset 3. Suitable for AirPods 4. Magnetic sleeve head design to prevent accidental loss 5. Cotton rope chain, light and stress-free to wear 6. Packing method: ziplock bag (can be recycled many times and used to store small accessories to slow down oxidation) 7. Warm reminder: only anti-lost rope, no other items 8. Weight: 6.3g 9. Size: 70cm in total length