This flexible magnet measures 5.5 x 6.37 x 8.37 and is covered with a comfortable cloth casing. The Flex Pad is perfect for lower back pain and if tucked into the waistband of the pants can be worn comfortably all day to alleviate pain and discomfort in the lower lumbar region. Two BIOflex� concentric circle fields @+350 gauss each. Size: 5.5 x 6.37 x 8.37 Magnetic Fields: 2 Gauss: 400 per magnet