Multi-function Design Versatile Unit Works As A Footrest Or Offers Free-standing Climate Control Features 3 Temperature Settingscool Fan Low Heat & High Heat Auto-off Feature Turns Unit Off After 8 Hours Of Use To Prevent Overheating Adjustable Footrest Elevates Feet and legs To Help Relieve Lower Back Pressure & Improve Posture Surface Massage Bumps Help Relieve Stress Low Power Consumption Etl Approved