The belt system is indeed designed without hip belt, but offers with height and length-adjustable chest strap sufficient adaptability to the respective stature of the child. Two offset from the center back cushions help to load back to dampen down and relieve the spine.
Whether such a lightweight backpack now meets the latest ergonomic guidelines and experiences of some, possibly even blown Web maximizing profits "experts" and lobbyists me was pretty shooting in selecting this backpack, the "feel good factor" my twins and low weight were the selling points. Textbooks & Co. make it our children hard enough, because does not have the satchel also unnecessary weight load on his shoulders.
The fabric rounds off the good overall picture.