Lumbar Back Cushion to Reduce Back Pain with Gel and Breathable Mesh | Orthopedic Therapeutic Design to support lower back Weight: 8oz. Dimensions: 12.5"L x 14.5"W x 3/4"H Twin gel packs cradle and support the back, exactly how nature intended Pressure relieving gel prevents numbness and discomfort Breathable fabric circulates air for natural cool comfort Portable, lightweight, folds for convenience, slim design