****Specifications**** --Material: 100% polyester --Dimensions: 16.7"" H x 11.6"" W x 6.9"" D --Reflective strip: Increase the safety of night walk. --Adjustable buckle: With a height-adjustable buckle to prevent the strap from slipping off. ****Features**** Large Capacity: --1 x main pocket + 1 x front pocket + 2 x sided mesh pockets. The main bag contains a compartment bag and an elastic compartment; the front zipper pocket is equipped with a pocket and a mesh pocket, which can hold notebooks, documents, mobile phones and other items. Double zipper, two-way opening design is more easy to use. Ergonomic Design: --The foam padded handle can be hand-carried, with a comfortable grip and strong load-bearing. Comfortable wide straps, reduce shoulders' pressure, thick back cushion, increase the comfort and breathability of the back. Reflective Strips Design: --There are reflective strips on the front and both sides of the bag, which greatly improves the safety of night travel. Adjustable Buckle Design: The strap is fixed with a height-adjustable buckle, suit for different heights and chest size, also to prevent the strap from slipping off.