Fellowes Foot Rocker with large platform allows for more comfortable rocking and features Microban antimicrobial protection to keep product cleaner. Rocking motion helps improve circulation and reduce fatigue. Flip product over to adjust height – range is 2 ¾ to 4 Inches. Unique tread design holds foot rocker in place while in use. Packed flat to reduce environmental impact. Platform Dimensions: 5-3/16 x 19-5/8 x 11-15/16 Inches.