iMovR EcoLast TreadTop Standing Mats - for Office Treadmills - Made in USA (18" x 30" x 5/8")

This mat is great for extended standing and has really reduced my back pain from standing at a computer. The dark color and vinyl material easily shows shoeprints, but it cleans without an issue. So far it seems to be durable, even with constant shoe use.

Comfy