The Brooks Dalston Medium is a compact backpack for everyday use. The main compartment offers space for a laptop of up to 15 inches and in the inside pocket is space for your phone and house keys. The 3 compartments on the outside you use for items that you like to have at hand. The bag is standard waterproof and finished with genuine, vegetable tanned leather. You simply adjust the bag to the desired length by pulling on the handle of the shoulder straps.Good to know: the bluesign® system was used when creating the Dalston Medium. This is a sustainable production of textiles that eliminates harmful substances from the start of the production process. This is the norm for environmentally friendly and safe production.