✅High-quality 210D nylon, tear-resistant, highly durable and waterproof, with the well-designed strap and breathable mesh back, it will be comfortable on top of clothes or against your skin. durable zinc alloy zipper making it even more durable. ✅RFID blocking technology, prevent information theft, RFID blocking material, prevent being scanned by the bad guys to keep your personal ID, credit cards, passports, money and other valuables safety. ✅Designed For Safe Travel - Invaluable for crowded marketplaces, airports, buses, trains, sporting events and music festivals. Virtually invisible to thieves, feel secure in any environment.