Innovative backpacks for school designed to be extra lightweight: The first super leightweight schoolbag was introduced in 2006. The brand’s trademark is the combination of minimum weight and stability in connection with unique product design. DerDieDas backpacks for school stand out due to their excellent weight/capacity ratio. The adjustable back strap system provides ergonomical wearing comfort. Intuitively operable magnetic locks and other details simplify everyday life at school.