Durable and lightweight, Frankies Posture Assistant Backboard is a great way to improve your posture at home or out on the road. Measuring 60L x 24W inches, the backboard fits perfectly under any mattress and its three-fold design is ideal for travel. Within seven nights your body will be fully accustomed to the posture improving power of Frankies Posture Assistant Backboard. Posture-improving backboard. 3-fold design. Hard paper board construction. Fits perfectly under a mattress. Dimensions: 60L x 24W inches. Manufacturer's warranty included (see product guarantee).