Business Source Ergonomic Rocking Footrest, 17-3/4"x13-7/8"x3", Black Rocking footrest is ergonomically designed to reduce muscle strain and fatigue. Curved leg undercarriage encourages a rocking motion. Rubber padded feet keep footrest in place. Footrest is made of sturdy, high-impact plastic. Color Black Size:	 17-3/4"W x 13-7/8"D x 3"H 1 Each