The Anti-Fatigue Mat with Calculated Terrain… fancy for: it has bumps and ridges so if you have a standing desk your feet get to flex and move so they don’t hurt at the en of the day. Loved this for a couple years but not desk jobbing at home anymore so it’s gotta go. Perfect condition. You can find more info at:

https://ergodriven.com/products/topo

If it’s here it’s available. Please Mention the item in your message or you will be ignored =]