1. Made of carbon fiber, the internal key chain shielding fabric shields the car key signal 2. The key case is simple and practical, moderate in size, and unobtrusive in personality 3. The hook and loop fastener is seamlessly bonded, the key ring is seamlessly linked to the car key, and the key can be easily exchanged inside and outside the key bag to protect your car safety 4. Structure: 1 car key position or card position, with key D buckle on the back 5. Function: RFID information anti-scanning/anti-radio frequency information leakage/shielding car key signal 6. Material: double layer cowhide 7. Maintenance method: wipe with water or a small amount of detergent, do not dry clean, expose to the sun, iron, or bleach 8. Size: open size: 20x10cm, closed size: length 15cm, width 10cm 9. Weight: 40g 10. Note: The product contains only the package, not others