The set includes a height adjustable sit-stand desk converter, a dual monitor mount for desks and desk risers and a standing medium anti-fatigue energizing mat. The desk converter sits right on top of your current desk and converts it to a sit/stand desk. Includes a retractable keyboard tray to help get you in the correct ergonomic position sitting or standing. Comes fully assembled. Monitor mount fits two 13"-27" LCD/LED monitors up to 8 kg/17.6 lbs. each. Double articulated arms make it easy to adjust monitors to any desired position. Tilts + or - 15 degrees, swivels 180 degrees, rotates 360 degrees. Perfectly sized 30" x 20" medium anti-fatigue mat provides plenty of room to move around, but can still fit into the kneehole of a standard desk or built-in when not being used. Black.