Features1. Large storage space that can accommodate your daily essentials (17 inch laptops and tablets, mobile power, A4 files, wallets, clothes, umbrellas, water bottles, and more). A large number of pockets keep your items organized and easier to find. (Attention! Gaming laptops and laptops larger than 17 inches are not recommended). This product is not suitable for children aged 12 and below.2. Breathable materials make your back more comfortable, and adjustable shoulder straps reduce shoulder pressure. The metal zipper is made of waterproof and durable materials, which can be closed and opened smoothly, ensuring long-lasting daily use.3. The luggage strap allows the backpack to be installed on the luggage/suitcase, sliding over the upright handle tube for easier carrying. The hidden anti-theft bag on the back can protect your wallet, passport, and valuable items from thieves.4. Perfect for use in offices, work, university, business, shopping, dating, travel, camping, hiking, dog walking, great gifts, and more. Essential items for business documents, university supplies, travel accessories, and laptop accessories.5. The USB port design provides you with a more convenient way to charge while walking. Please note that this backpack cannot be self powered, and the USB charging port only provides easy charging functionality.SpecificationMaterial: DacronColor: BlackSize: 41 x 29 x 6 cmWeight: 700 gPackage Include:1x Shoulder bag