TILT, WOBBLE, ROCK - Active your core muscles and burn calories without moving from your desk! Our board rocks up to 8. 5° from side-to-side. It’s perfect for at home exercise and physical therapy. FOOT-MASSAGING COMFORT MAT - Take advantage of the uniquely textured surface to massage your feet and improve circulation. The raised terrain is designed to release pressure points in your feet for ergonomic comfort. NON-SLIP NON-SCUFF DESIGN - A non-slip rubberized bottom keeps the board stable letting you stretch and stay active, safely, in the comfort of your office or at home. HEAVY-DUTY CONSTRUCTION - The board is made of wood for durable and long-term use. It’s compact and designed to be easy to carry. Stay active wherever your work takes you. DIMENSIONS - 20" L x 14" D x 2. 2" H