Quality Material - Made of high quality polyester that it is lightweight and durable with function of water-repellent. The exquisite stitching is strong and not easy to fall off. Smooth and extended SBS zipper helps easy use of the bag, avoiding breakage or jamming. Sturdy plastic buckles hold the rolled up part, water bottle and chest strap well. You can adjust the length to fit your needs.

Spacious Interior - 2 compartments with 5 pockets, one water bottle holder inside and outside. At the top of the backpack, there is about 5 inches of height that can be adjusted. You can roll it up and fasten it with the buckles or untie it to make it roomier when needed. It can easily hold laptop up to 17 inches as well as books, binders etc. Also perfect for carry your clothes and other items as a travel backpack.

Dimensions - This backpack is 31Lx17Wx50H cm / 12.2Lx6.7Wx19.69H inches when rolled up; 31Lx17Wx63.5H cm / 12.2Lx6.7Wx25H inches when untied; medium pocket: 29Lx18W cm / 11.41Lx7.09W inches; mesh pocket: 17.5Lx14W cm / 6.89Lx5.51W inches; small pocket: 9.5Lx13W cm / 3.74Lx5.11W inches; back anti theft pocket: 16Lx19.5W cm / 6.3Lx7.68W inches; luggage sleeve pocket: 24.5Lx15W cm / 9.65Lx5.9W inches; capacity: 26.35L/0.9cuft; weight: 0.71kg/1.56lb.

Unique & Comfortable Design - The top of the backpack is metal buckles closure and the middle is zipper closure. There is also a zipper on the back side to facilitate you to take the items in special circumstances. The back and shoulder straps are padded and breathable to reduce shoulder pressure. The adjustable chest strap enables you to carry this backpack more firmly during daily activities or running.

Multifunctional - This backpack is personalized and fashionable with a large capacity and lots of pockets suitable for unisex adults..THIS ITEM IS NOT INTENDED FOR USE BY CHILDREN 12 AND UNDER.