These floor mats are awesome. They are just the right size for the project I was working on. I did the entire floor of my workout room with them and saved me a ton of cutting and trimming being only 1' square. Highly recommend using floor adhesive( available at your local hardware store) to stick them down as even with wall to wall coverage they can still heave if you're jumping around. (Yes I do some crazy workouts. When it comes to fitness its no holds bar!) great for p90 x, insanity , and crossfit type workouts. I do not recommend use of heavy weights and weight lifting equipment with these, you'll need a little bit tougher of a mat to put on top for stuff like powerlifting .