Demensions: 20.5 x 12.5 x 7.0 inches; Fits up to 17.3 inches laptop, like Dell / Lenovo / Toshiba / HP/ Macbook etc.More room for keeping 2--3 days summer clothes for travel. USB 2.0 Charging port design. Built-in USB cable. Use it to connect your own power bank, then connect your phone with original USB cable to the USB port, you could charge your phone conveniently. 3 functional compartment + 1 front pocket. Totally meet your daily use with this backpack.Varies pocket can organize your daily items efficiently. Lightweight design is easy for carrying. The top grab handle offers quick grab-and-go style. Ergonomic design ensures the dispersion of gravity of the fulled bag. Personalized good looking appearance with large capacity, ideal for using as book bag, rucksack schoolbag, satchel, for daily use at school, work, weekend, outdoor holiday, outdoor activities, occasional travel, gyms, hiking, biking etc. Nice size admirably suits college students, teen girls boys and adults.