USB Charging Port: 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. Headset Port: you can listen to your favorite music on the go hands-free. Occasion: Perfectly used as sports backpack, college/high school bookbag, office work bag, casual daypack, perfects for business traveling, weekend getaways, shopping & outdoor activities in daily life. Material: Made of Water Resistant Lightweight and Durable Polyester Fabric. Ensure a secure & long-lasting usage everyday & weekend. Storage Space: One separate laptop compartment hold 15.6 Inch Laptop as well as 15 Inch,14 Inch and 13 Inch Macbook/Laptop. One spacious packing compartment roomy for iPad, mouse, charger, binders, books, clothes, ect. Adjustable pockets at side for water bottle and umbrella, make your items organized and easier to find. Comfortable: Breathable and adjustable padded shoulder straps relieve the stress of shoulder. With a hidden anti theft pocket on the back protect your phone or valuable items from thieves.