A kit for a large backpack. The cover is 29cm which ideally accommodates a final bag height of up to 33cm. A range of cord yarns are suitable for this bag such as 550-700gr of Big Cordino cord yarn; or 600-700gr of Eco cord yarn; or 4 reels of Heart cord yarn. This kit contains the eco-leather accessories for a backpack: base, cover with metal lock and adjustable straps.