*NIB* This Ergonomic Adjustable Footrest by Mind Reader is an under-desk platform designed to improve posture, leg circulation, and spinal alignment. • Three Height Levels: Manually shifts between three tiered vertical levels ranging roughly from 3.25 to 6.5 inches high. • Free-Floating Tilt Platform: Rocks back and forth between a O to 30-degree angle to keep ankles moving and active. • Textured Massage Nubs: Features rows of raised circular bumps across the surface to stimulate blood flow in the feet.