I must have mixed this up while evaluating mats because it is black - not gray by any stretch, but black. I'll keep, but for the premium paid thinking it would be superior, it isn't quite as resistant/ thick as others I have. It's a softer, thinner, more spongy feel underfoot -not as thick as expected--the surface more permeable. It still improves upon the hard marble tile underneath so I won't return it but it has me second-guessing my purchase, so...