Invigorating Rubber Surface With Diverse Massage Textures Targets Pressure Points Elevates Feet & Legs To Relieve Lower Back Pressure & Improve Posture Free-floating Platform Allows For Intuitive Rocking Motion To Help Promote Lower Leg Movement Scissor-motion Height Adjustment Provides Three Platform Height Settings: 4" 5-1 and 4" & 6-1 and 2" Up To 25 Tilt 1-year Limited Warranty