[js2]

I think you mean horse stall mats, which you can find at Tractor Supply, etc. 4’ x 6’ x 3/4” vulcanized rubber:

https://www.tractorsupply.com/tsc/product/4-ft-x-6-ft-x-3-4-...

The ones I have (I used a few in my home gym) were made in Canada. I’m surprised any of these come from China.