The Kensington SmartFit Conform back support provides extra support. The SmartFit system allows you to select your ideal height settings. This backrest makes it easy to sit in an ergonomic position, supporting the spine and lumbar region. It contains 4 independent springs that conform to your body type providing great support leaving your back more relaxed. Use this support on almost any office chair. This back support contains ventilating parts to ensure heat dissipation, keeping your back cool and dry for a more comfortable sitting experience