Slatted frames in the test - Rarely recommended

Stiftung Warentest tested foam mattresses on springy slatted frames from mattress suppliers. These combinations rarely bring advantages. Usually better: a rigid slatted frame. Is a springy slatted frame important for good sleep? Stiftung Warentest asked itself this question and put ten wooden slatted frames to the test - in combination with ten mattresses from the current mattress test. The slats consist of spring slats and adjustable head and foot sections.