Enjoy this versatile memory foam seat cushion with lumbar support ... or remove the lumbar pillow for neck support while napping in the car! Offering custom comfort to suit your needs, the memory foam cushion naturally conforms to your body’s contours, and the lumbar support cushion helps reduce pressure on the lower back. Complete with straps for securing to auto seat or office chair, this 3-in-1 cushion folds in half for easy storage. Polyester, foam, EVA; spot clean. 38 1/2" long overall. Back is 21 1/2" long x 18" wide; seat is 16" long x 18" wide.