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 30 x 16 x 12" (76 x 41 x 30 cm). One side slips under the mattress and the other side supports the blanket. Dimensions are 16 x 12 x 16" (41 x 30 x 41 cm) high.