I purchased this at AEON and used it for a while, but I'm selling it because I no longer use it. This is a convenient backpack that's easy to access whether you carry it in front of you or on your back, and it doesn't dig into your shoulders. It's made of gray polyester. It measures 40cm (height) x 30cm (width) x 13cm (depth). The shoulder straps are 6cm wide and padded, reducing the burden on your shoulders. There's a snap button at the opening of the backpack, so you can fasten it to make the bag thinner when you have fewer items. It has plenty of pockets: one on the flap, one under the flap, one on each side, and two inside on the back. There are access openings on both sides of the back, allowing direct access to the main compartment. You can reach into the access openings while wearing the backpack, and take things out from either side without lifting the flap. There is one tear on the flap (photos 9 and 10), but it doesn't affect use.