LARGE CAPACITY WATERPROOF 18 X 13 X 8 Inch.35L.The travel business backpack is made of high density waterproof polyester.Three spacious compartment and various independent pockets organize your stuff very well,such as college supplies,travel accessories,books,clothes,bottle,umbrella and key.Moreover,the main compartment is with padded Laptop compartment, which could protect your laptop 13 Inch,14 Inch,15 Inch, 15.6 inch up to 16 Inch.Suitable for daily life business trip school. USB PORT HEADPHONE JACK USB port with built-in cable, offers great convenience to charge your phone while walking,via the headphone interface, you could enjoy music and audios at the same time.(powerbank is not in packaged) ERGONOMICS REFLECTIVE STRIP Comfortable airflowdesign with thick and soft breathable padding gives you maximumsupport. Adjustable S shoulder strapstheof the shoulders, and on the shoulder strap, designed with reflective strip, makes you noticed in the dark. Allfunctions ensure comfortable and safe everyday long-lasting travelling usage. FUNCTIONAL BACKPACK Zipper with the metal matte pulls allows it to slide easily and smoothly.Smart luggage sleeve helps to free your hands andwhen travelling.Hidden anti-theft pocket protect your valuables from stealing. GIFT WARP AVAILABLE Stylish appearance is thepopular school supplies for student. Of course, it can also beas a daily backpack and business backpack.To prepare a wonderful gift for friends or family, our school bag is a good decision.(age over 3 years old)