Designed by a Chiropractor, this expertly-shaped curved frame support, stretches and massages the lower back, spine and neck, helping reduce pressure on each vertebra to gently re-align them to a more natural, stress-free position. The rolling balls provide gentle but deep Shiatsu-style kneading, helping to increase blood flow, relieve muscle tension and bring soothing relaxation to both your back and neck. In only 15 minutes, your backache should have melted away. Crafted in quality hardwood. Guaranteed for 5 years. Measures 76 x 25 x 9cm. This DELUX MAGNETIC VERSION has magnets fitted in each roller, giving extra therapeutic benefit.