1. Skin-friendly silicone material, delicate feel, no deformation when kneaded 2. Elastic silicone wrapped around the corners, anti-knock and anti-bump, more comprehensive protection 3. Will not block the signal, does not affect the reception of transmission 4. Washable, easy to clean 5. Precise fit, thin and lightweight 6. Material: silicone 7. Size: about 55.7 x 31.9 x 9.8mm 8. Weight: about 4g. Note: only the protective case, the location tracker in the picture is not included