Fellowes® Compact Foot Rocker is ergonomically designed to promote comfort in areas with restricted work space. Rocking motion helps improve circulation and reduce fatigue. Flip product over to adjust height - range is 2-3/4" to 4". Unique tread design holds foot rocker in place while in use. Packed flat to reduce environmental impact. Platform Dimensions: 5-3/16"H x 16-1/2"W x 9-1/2"D.