NSB WLAB-2 or WLAB2 is a class of twenty sleeping cars built by Strømmens Verksted for the Norwegian State Railways (NSB). They serve as the sole sleepers in Norway, being used on the Bergen Line, Dovre Line, Nordland Line and Sørlandet Line. Each car features fifteen compartments, which can each be utilized with a single or twin bunk configuration. The carriages have a unique octagonal shape, are 27 meters (89 ft) long and weigh 48 tonnes.