This is not a screaming deal. Amazon is selling for $68.99
https://smile.amazon.com/Sivan-Fitness-Exercise-Density-Interlocking/dp/B017J8ZC3K
That amazon link advertises “high density foam” mat.
Woot advertises “high density rubber” mat that has the cushioning properties of a foam, but does not list foam being in these at all. I bought several of these and paid the 3x price increase because of that distinction. I am expecting them to be rubber and not foam. We will see.
I will take a WAG and say prepare for disappointment.