By shifting the spine into a positive neutral curve, the Obus Ultra Forme™ Backrest’s innovative design relieves pressure on the lumbar discs and lower back muscles. This in turn reduces muscle contraction by an amazing 50%, dramatically alleviating much of the strain typically felt in these muscles.

 

• S - Under 5'2"
• M - 5'2"-6'2"
• L - Over 6'2"