Staying seated for extended periods of time at the office or at home can lead to serious back pain. Help protect and maintain proper spinal curve with this lightweight version of the popular Sitback Rest, constructed from mesh material to allow air flow to your back and keep you cool and comfortable all day. The shape conforms to your body for uniform support and comfort. Side support wings wrap around your back, keeping you in the correct position to ease body tension and help maintain proper posture. Attached positioning belt attaches rest to most chairs. 17.5” x 14” x 5.5” (45cm x 36cm x 10cm).