DURABLE& :The backpack is made of Polyester .This material is durable and firm, easy to clean.This backpack becomes more with of Polyester fiber.The straps and back side of the backpack comes with protective padded design,easy to carry throughout the day.Two different looks,meet your various need.PLENTY SPACE & GOOD ORGANIZATIONDimensions:9.4*5.5*17.7inch(L*W*H) Weight:1.3LB Capacity:15.1L.You can easily fit in a 15laptop inside the laptop compartment.One pocket on the front,one on the back. Plenty private space to hold lots of stuff like computer or daily necessities , such as notebooks,laptop, ipad, pens, cell phone, cards, tissues, MP3 player, binder etc.APPLICATION:It's convenient for all occasions.Adjustable padded shoulder straps, tighten and loosen easily.The bag can be folded to adjust the height.This bag also has two side pockets where you can place your umbrella or water bottle .MULTIPURPOSE USAGE & CASUAL STYLE: The retreat backpack can fit your many occasions. It also fit men and women. You can carry it to hiking, shopping, cycling, traveling, dating, etc.