We are committed to providing our consumers with high quality and cost-effective products, which aims to make the consumers really feel the charm of the product itself. ARCITIC HUNTER invisible anti-thief backpack: Function of invisible anti-thief .Theft proof protect items inside from thief. -USB charging port charge your phone conveniently. -High density PVC film Polyester fabric -TSA007 lock -Practical shoulder belt pockets -Reflective luminous lining glow -Expedient key ring -Water-resistant zipper -Aluminum alloy handle -Side umbrella/water bottle pocket