1. Material: external PU leather, internal anti-oxidation shielding material
2. Function: RFID information anti-scanning/anti-radio frequency information leakage/shielding car key signal
3. Maintenance method: wipe with water or a small amount of detergent, do not dry clean, expose to the sun, iron, or bleach
4. Simple and practical, moderate size
5. Size: small size 11.5x9x6 cm, large size 17x12x9 cm
6. Weight: small size 175 grams, large size about 386 grams
7. Capacity: the small size can hold an ETC card, and the large size can hold a 6.5-inch mobile phone