This is the floor mat that is ergonomically engineered to enhance the health benefits of working at a standing desk. Crafted of premium, high-density foam, the generous 1" cushion is carefully contoured with sloped sidewalls to allow elevation of one or both feet and provides support when stretching the calves. The center massage ball works out the muscles and tendons in the foot to improve circulation and ease discomfort; it also assists in sliding the mat out of the way for storage. The mat encourages muscle movement in the feet and the legs without needing to step away from important deadlines. 3 1/2" H x 32" L x 19 3/4" D. (8 lbs.)