The foot platform can be positioned to 4.5" or 5.7" off the floor and locked at any of the 4 available angle settings (0°, 10°, 20°, & 30°). Height and angle adjustments are accomplished with hand-operated knobs on the sides of the foot rest. The surface of the Adjustable Foot Rest is textured to provide traction to assist in maintaining proper foot position and non-skid pads keep the foot rest securely positioned where required