Rubber stall mats from Tractor Supply. These are leftover from a home gym project we were doing. They have never been used as stall mats. They have just sat in the garage since we bought them. They have been run over a few times which has slightly damaged the top edges but they are still very solid overall. They sell for $58 at TSC.

Asking $90 for 3 full size mats and a partial that is approximately 17-18" wide and had a small notch cut from one of the ends.