The Kortteli backpack is made from mélange beige polyester with a nylon interior. It has adjustable shoulder straps, a large zipper pocket in front and a front top flap that fastens with two buckles and includes a zipper pocket. There are drawstrings at the sides of the backpack and one side has a long zipper, enabling the bag to open up completely. The inside features a padded zip top pocket and three smaller pockets, one of which has a zipper. One final zipper pocket can be found on the backside of the backpack at the side seam.