This AliMed Lumbar Support features a foam core with durable, washable cloth covers; helps keep you pain free all day. Nonallergenic and mildew-resistant blue twill. Working in a seated position for long periods of time is one of the main contributors to low back pain, whether in an office chair, driving long distances, or operating heavy machinery. Back pain associated with sitting with in adequate lumbar support is the most prevalent and costly work-related musculoskeletal disorder today. A cost-effective and quick solution is to provide workers with lumbar supports. This Lumbar Half Roll adds support to contoured-back chairs. 2-1/2" thick x 12"