Our Bakrest Backrest was researched and approved by the Royal Orthopaedic Hospital. Contoured in Putnafoam on a solid base, the Backrests do not assume the shape of the seat. Instead they hold their ergonomic shape to support the spine, giving excellent lumbar support, ideal for the home or car. The Bakrest Backrest is covered in hard wearing velour with an adjustable strap. Dimensions: Large Bakrest: 34cm x 32cm x 9cm 13 inch x 12 inch x 3 inch; Compact Bakrest: 30cm x 20cm x 6cm 12inch x 8inch x 2inch. For further information please contact your local shop or call 01908 644133. We look forward to hearing from you.