Rife Ergonomic Adjustable Height Foot Rest This foot-rest helps you sit in a good working position at your desk and reduces strain on your legs, back and neck. - it's easy to tilt and adjust the platform to a comfortable angle just by applying pressure with your foot. - your feet stay in place when the platform is tilted because it has a non-slip surface. Height adjustable ergonomic foot rest massages soles of the feet, increases blood flow encourages good posture with acupressure points adjustable angle slip resistant surface reduces pressure on the back of the thigh.adjusts to three different heights with the touch of your foot. Surface tread provides great base for foot massage.