TruContour Lumbar Pillow for Sleeping - Support the Lower Back in Bed with Medical Grade Memory Foam This advanced lumbar pillow for sleeping is designed to help improve spine posture and help reduce strained back muscles and ligaments in the back, side, and stomach sleeping positions. Medical grade memory foam offers the right balance of support and comfort. Hypoallergenic and dust mite resistant. Super-soft, machine washable outer velour cover. Inner mesh liner increases comfort and breath-ability. Available in two levels of lumbar support: Light and Super Lumbar. The Light model is for those seeking a small to moderate degree of support. The Super Lumbar offers offers a wide range of support - from light to substantial. The Super Lumbar consists of foam pieces of different thicknesses and allows the total height to be adjusted by removing either inner foam piece. Dimensions: Light Lumbar: 17 x 8 x 1.75 in. Super Lumbar: 24 x 8 x 3 in. Happiness Promise - TruContour takes pride in providing premium products and quality service. If anything should happen to your product send it back within ONE YEAR and we will ship you a brand new one free of charge. We provide a full refund within 30 days if you are not completely satisfied.