Achim Interlocking Foam Anti Fatigue Floor Tiles, 4 tiles/16 Sq. ft., 24 x 24, Multicolor

I haven't spent much time standing on these tiles, so I can't say how they'll do for standing on them for any length. I got the ones with a gray/brown wood-grain look. They look really nice (the picture below shows them against a dark brown wood floor). The grain can be arranged so it all goes one direction or you can alternate for a more patterned look. They interlock easily and they come with edging pieces that "round off" the corners and give it a straight edge for a finished look. These will likely be used in the garage in a work area but I can see using them under the throw rugs my dogs like to lie on for some extra cushioning, too. They aren't as thick as some, so you can set things on them and it's unlikely they'll topple over because of the amount of cushion. They're about as thick as a pair of regular flip flops (the ones with a little but not too much cushioning).

I bought these tiles for a workout corner I was setting up in my living room. I purchased two packs so it was a total of eight tiles all measuring 24 x 24" a piece. They were easy to put together and it didn't take much effort to trim a couple of the corners to create my ideal space. The tiles are soft and have a nice cushioned feel for my workouts making it incredibly nice to be on the floor during my sets.