The duo back principle
duo back is the patented system of two freely movable backrest wings. The back
rest wings move separately and independently from each other. Your body remains
flexible and movable, the seat muscular is supported and unhealthy pressure is
avoided. The effect is like a back massage. The result: you feel fit and you sit
healthier. According to proved information the duo back releaves the pressure of
the back column up to 50% more than standard backrests.
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