Fjällräven is well known for being a Swedish outdoor equipment company. We just received four different styles of bags from them including the Foldsack No. 1, Totepack No. 1, Kånken and the Kånken No. 2. All of the bags are made from Vinylon fabric which is quite durable as well as repels moisture. Each have different compartments and are different sizes but share a square-like shape to allow you to stay comfortable when carrying heavy weight.