All-Natural, Anti-Fatigue Mat for Standing Desk Flexible wood surface extends the amount of time you can stand while you work. Experience a subtle yet responsive bounce while standing at your desk. The wood surface is actually flexible, facilitated by our unique laser-cutting process. The end result? Step-on comfort with a soft, spring-like performance! Eco-friendly materials—five-ply wood atop a blended natural wool felt. No-slip-grip bottom keeps your Springboard in place.