Multi-day backpacks for multi-day trekking. The 48l has a wooden frame made from SFSC certified wood. Each of the packs can feature attachable accessory pockets to make the pack your own. It also has a fully adjustable back system. The Stubben day pack is a core Fjallraven pack. Translating as ?€?stump?€? in Swedish, This one has an aluminium frame so you can sit on it!