I bought this to add to the top of a 24"x60" Hip Thrust platform that I built for my smith machine. First thing I noticed when I opened it was that it has almost zero smell. That's fantastic! Off gassing from rubber mats can be really hard to deal with in a home gym. After I opened it I could tell that the texture is very nice and non-slip. It feels really durable, yet it wasn't too hard to cut down to the size I needed for the platform. High marks all around.

We used this mat under a step at our poultry farm. We had problems with the step moving around, so I decided to give this mat a try. I cut it down to our desired size, and it works great and is easy to clean! We liked it so much that I ordered a 2nd mat. We are using the entire mat in a high movement area. It's great! It's thin enough that you don't notice it's there when walking off it, but you do feel the relief of standing on it instead of the concrete floor. Definitely recommend this product! We love both we have purchased!

I picked this product for a real 100% American built garage work bench, 1/4 " thick rubber easy to cut and install no curling or ODOR!! (shame on amazon for posting fake reviews on smelly odoriferous floor mat that don't exist) I still have enough left over to make a 3' x 4' doormat..

I'm using it as a dart catcher for bounce-outs from my dart board. I bought the 7mm thinking the 3mm would be too thin. Well, I could have gotten away with the thinner one. When darts drop out of the board or bounce off, they barely stick in this stuff. Awesome. I can literally drop a sharp dart from six feet and it will barely stick in it. This serves its purpose in that it will protect my hardwood floor. However, it is NOT easy to clean.

Dude. All the dust that accumulates from a hardwood floor and sticks to your shoes shows up on this thing. I guess a damp cloth could be used to wipe it away, but it's going to be a pain to do that every time it gets footprints on it. And they stand out like a dead kitten in a horse trough.

For now, I just laid it down a couple of hours ago and the curl of it still hasn't settled. They ship it rolled up, so it might need to be rolled the opposite direction to undo the curl. I read one review that said it has no memory. Well, for now that has not proved out. I'm hoping this resolves soon.

The smell is noticeable, but not terrible. I'm sure it will dissipate, but it doesn't bother me. It's not like bringing a box of horse manure in and letting it sit there or anything. Not a big deal.

Overall, I am very happy with the way this thing performs. It does what I bought it for, it has a neat little squeak to it when I walk across it to get my darts, and it looks pretty good against the hardwood floor. Thumbs up!

Regarding the 4x6 mat, I am very impressed with this. I considered a couple other similar exercise mats on Amazon and went with this one. Here are some points I want to make about it:
1. It is sized exactly as advertised: 4ft x 6 ft. I also verified with a digital caliper that the mat is exactly 7mm thick. For reference, 7mm is a tad over a quarter of an inch and is exactly as thick as a stack of four quarters. Regarding any reviews that say the mat is a different size, I am sure it was just a mix up.
2. It is made of little bits of rubber that have been compressed flat. Going off of some answers to questions posted by other customers, the mat is made by cutting slices off a bigger chunk of rubber. Though I myself can't confirm this is how they are made, the surface is very smooth on both sides as if they had been sliced with a very sharp blade. There are small pits in the surface due to the spacing of the small bits of rubber but the surface is not bumpy. You can hold poses on your elbows or knees and the mat won't leave indentations in your skin.
3. The mat does not shift around while using it on carpet. I previously used foam interlocking squares that shifted about while exercising but this mat stays put, which I am happy about. I also noticed that this does not leave marks on my carpet, which is also good.
4. It isn't that spongy but it does give a little bit. Trying to think of a good comparison to describe how squishy it is. It's about as firm as the rubber sole of an athletic shoe, maybe a tad firmer depending on the shoe. Definitely more firm than a regular foam yoga mat. You can probably drop weights on this no problem but I haven't done this. It is pretty firm so that it doesn't wrinkle but it does flex too. I use it on my carpet and can feel the padding underneath, which makes it more comfortable to lie down on than if it were on a rigid floor.
5. I use this upstairs. It doesn't completely absorb the sound, so if you live above someone in an apartment and are jumping around on this mat your neighbors will probably still hear you. Realistically though, you would probably need several layers of rubber and foam to be completely silent.
6. The rubber is very tough. I exercise on this mat with my shoes on without any issue. It's not slippery nor is it sticky.
7. It has small pits from the spacing between the bits of compressed rubber as mentioned above. I imagine this might hold moisture. I haven't had this mat long enough to experience any issue with this though. I imagine using an all purpose cleaner regularly would keep it clean.
8. Has a slight rubbery smell that is somewhat noticeable after unpacking. On the second or third day, the smell went away.
9. Top and bottom surface are the same. One side has a sticker indicating it is the bottom. An answer to a question in the questions section mention the mats are sliced off a bigger piece of rubber and the "bottom" might have a different sheen than the "top". For all intents and purposes though, they are the same surface.
10. Unrolls and lies flat. Doesn't have any memory that causes it to curl up.
11. Only comes with the mat. No carry bag or velcro straps. That's ok for me though. Thought I'd mention that if was super important to someone.
12. Weighs maybe 25 lbs, so it isn't super light but it isn't exactly heavy either.