Office Ergonomic Footrest/Computer Fool Stool Under Desk Support/Adjustable foot Stand/Foot Riser w Non-Slip Surface No Rock Back Pain Relief (Black/Red) ERGONOMIC OFFICE FOOT REST : This under desk footrest relieve Tendon, Lower back, and Joint pain. Increase comfort at your desk. Keep legs and feet elevated for less strain and fatigue. ADJUSTABLE HEIGHT FOOT STOOL : 4 levels of height adjustments (3.5 in. / 4.5 in. / 5.5 in. / 6.5 in.) for individual comfort and let you stretch your legs for increased circulation. TILTING UNDER DESK FEET SUPPORT: 4 tilt angle adjustments (10/15/20/25) let you stretch your legs and increase blood circulation and perfect relaxation while working NO ROCK AND NON SKID FOOT PEDAL: The non-skid foot surface eliminates slips and enhances overall stability. Rubber-padded backing prevents footrest from sliding. BIG FOOT SUPPORT AREA: Foot platform size 17.7 in. X 13.6 in. Enjoy ample foot space without slipping, sliding or moving under table or desk. Ergonomic design supports your legs at your preferred angle of tilt ( 0 ~ 25 ) Height is manually adjustable to4 positions Large platform measures 17.7&#034; X 13.6&#034;, Made of High Impact Polystyrene Weight: 3.98lbs Package dimension: 19&#034;x14&#034;x2.5&#034; Made in Taiwan. Quality Assured. Color available:gray and red Posture Circulation Back Problems less tired You could adjust heightsusing knobs on the side easily. Adjustable foot pedal provides 4 different angle adjustments (10/15/20/25). It does relieve the pressure on your back and legs.