ObusForme CustomAIR Backrest w Adj Lumbar Support Jobst Mens 8 15 Athletic Sock Carton Shipping Weight 49 lbs Color:Yellow Carton Shipping Weight 49 lbs Pulse Rate: 40~180 times min Retail boxed * Our award winning backrest support transforms ordinary chairs into ergonomically correct seating * The S shape of the ObusForme Backrest Support molds your spine into a more anatomically correct position and helps to enhance overall posture by supporting proper spinal alignment * Features & Benefits: Engineered shape conforms to natural spinal curvature Integrated adjustable lumbar support adjusts vertically to provide a full range of support from the thoracic to the lumbar regions of the spine Hand held pump and valve enable customizable inflation deflation of the lumbar support to suit personal requirements Accommodates regular changes of posture which helps alleviate stress on the lumbar region Pump deflation valve and hose store neatly in pocket when not in use Lightweight and portable turns any chair into an ergonomic seating system Use at home work or in a vehicle Colour: Black