Size:L:32*W:20*H:49CM(L:12.5"*W:7.9"*H:19.3")WELL MADE BACKPACK: This backpack made of eco-friendly and waterproof nylon fabric, with ble and claic metal zpers. Comfy and able.USB PORT DESIGN: With built in USB charger outside and built in charging cable inside,this usb backpack offers you a more convenient way to charge your phone while walking. Please noted that this backpack doesn't power its, usb charging port only offers an easy acce to charge( IS NOT INCLUDED).MULTI : Lightweight stylish backpack, perfect for busine, short tr, ,weekend getaways, shopping, profeional office work,leisure, hiking, camping ,overnight stay and other outdoor activities. Also, it is a perfect college high school student backpack for boys,girls,teens,women and men.【Multurpose】: the backpack perfect to throw under your seat on an when you are veling or on busine tr. Suitable for commuting or carry-on, can be easily stored. Good choose for a busine laptop backpack, work backpack, office work bag for men and women, also will be a good choose for college high school student big student for boys, girls, teens, adults