1. Purpose: To prevent hacking, tracking, chain of custody 2. Scope of application: mobile phones, passports, car keys, credit cards, transmitters, small electronic devices, etc. 3. Style: Unisex 4. Process: sewing 5. Material: Oxford cloth 6. Function: anti-signal detection, anti-electromagnetic radiation, anti-GPS positioning, anti-information leakage 7. Size: Small about 25 x 28cm, Large about 45 x 35cm 8. Weight: small about 88g, large about 165g 9. Description: only the shielding bag, excluding other items in the picture
