New Lumbar Roll offering lumbar support in for common low back pain, The Original McKenzie Firm Density Lumbar Roll features a non-wrinkle, 100% polyester wick-away fabric. This lumbar cushion is the ideal companion in the car, at the office or for use with any seat that does not provide adequate lumbar support. The built-in strap secures the lumbar cushion to most chair backs and can even be used around the waist. Roll measures approximately 11" wide x 4.75" in diameter. Strap contains latex.