Oh my gosh, these are amazing!!! I was looking for something to filter out some of the sounds my kids have been making on the floor during shelter in place and to hopefully avoid the downstairs neighbors pounding the broom against their ceiling and screaming at us to keep it down every 10 minutes. I ordered the 1" thick grey mats (72sq ft) on June 26th with an estimated delivery date of August 20th. I took the plunge and decided to wait. Well, they arrived today, July 2nd, a mere 5 days later!!! And they are amazing! Great quality, true to the 1" thickness claim, all the same shade of grey, and reversible which makes installation a breeze!!! Each square comes with two edge pieces so you have more than enough for any configuration. I laid out the mats on top of our rug at first and then decided to sandwich them under the rug so our living room was a bit more aesthetically pleasing. 18 was just enough to cover the majority of our living room and it totally helps with the sound of running feet and crashing toys! They did have a strong odor upon opening but that's pretty standard for foam mats and it did dissipate fairly quickly. Overall, this was more than worth it for the low price! Seriously considering buying another set.