Take the load off your feet Keep the weight of covers off your feet without sacrificing warmth. The Blanket Lift Bar is made of plastic coated steel. It creates a free space of about 760 x 410 x 300mm (30 x 16 x 12 inches). One side slips under the mattress and the other side supports the blanket. Dimensions 410 x 300 x 410mm (16 x 12 x 16 inches) high.