15.87 Oz. Made from 100% polyester, durable and fashionable. Two main pockets for carrying books, binders, clothes and one front pocket is suitable for storing some small things. Padded back and adjustable shoulder straps for ultra comfort and stability. Zipper closure allows it easy to open and close. 【Applicable situation】School, hiking, training class, shopping, zoo, park, outdoor sports, for men and women. 【Size】11.81"(L) x 5.51"(W) x 17.72"(H) x 5.9"(Hand Drop). 【Parts structure】Top handle strap, adjustable shoulder strap. There are mesh pockets on each side of the bag. 【Washing notice】Suggest hand washing.