1. Material: Rubber 2. Small size, light weight, easy to carry. 3. With metal hook, can be hung on a backpack or keychain, easy to carry. 4. Reserved charging port, no need to remove the headphone cover when charging. 5. Fully protect the device from normal scratches, dirt and wear. Note: 1. This product only has a protective cover, not headphones. 2. The actual product is subject to the title model, and the picture model is for reference only.