AliMed Lumbar Supports feature a foam core with durable, washable cloth covers. Fit any chair to help 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. In face, 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. Take advantage of quantity discounts and save. We offer three models to suit any of your needs: Contoured Lumbar Cushion supports the entire back. Attaches to chair with rear strap. 13" x 14" Lumbar Half Roll adds support to contoured-back chairs. 2-1/2" thick x 12" Lumbar Full Roll provides greater support for flat-back chairs. 5" thick x 12"