This Foot Rocker is the dynamic, rocking footrest to bring your feet to a new, more ergonomically friendly position. Featuring unique ball bearing rollers on the surface for subtle massaging effect, the 300B offers two sides so you can alternate between a flat surface or a surface with rolling massagers. In addition, it's supremely height-adjustable, so you can raise or lower the platform to your optimal height in seconds. Features: Two-sided design flips over quickly and easily. Non-skid inset pads keep feet from slipping off the surface 3" of height adjustments for your height preferences. Ball bearing rollers on a metal track provide smooth, rocking movement for the feet. Rubber feet on the bottom hold the foot machine in place. Available in Dark Cherry and Natural.