First, I am not a review-writing type of guy. But this is an exceptional product. I have a very robust home gym in my basement, but it has lacked flooring. I didn't want to hire flooring specialists, because we live pretty remotely. I decided to do the floor in horse-stall mats, as is typical in home gyms. But the mats were so toxic and outgassing so much, we had to take them out. After searching endlessly for something that wouldn't be poisonous to train on, I landed on Gorilla mats. I ordered a 6'x15', and it came SO fast. It's large enough that it doesn't move on the floor, is abrasian resistant enough for kettlebells and barbells, and doesn't smell for more than a few minutes after unrolling it (even then it was a very faint odor). I plan to buy a few more and fill the entire room with them, but for now it's a great size for all my workouts. I can't recommend this mat enough.