1. Material: Silicone 2. Process: Plastic molding 3. Use environmentally friendly silicone material, safe and healthy 4. Waterproof, dustproof and scratch-proof 5. Soft, strong elasticity, good hand feeling 6. Full cover design, all-round protection of the tracker 7. Can be hung on bags, keychains, wallets, easy to carry, and does not take up space 8. Remarks: Only the silicone protective cover will be shipped, no others