Issues with some

I purchased several to put on a concrete basement floor. Some laid flat with a little crinkling where it was folded which eventually laid flat. Some had large upright bubbles that aren't laying flat. Disappointed the only reason I am not returning is because it's so large to try to fold it up and cart it back to the store.

Works well to stop skidding

Needed something to put under a bike trainer mat that would protect the wood floor. This was not very thick so it was perfect and keeps the mat in place. It did have a strong smell as some reviews said, but I just left it outside draped over a rail for a couple of days and most of the smell dissipated. Works well for the use for which I purchased it at a good price.

Smells awful

I bought two of these rug pads. It keeps my 5x7 rug in place really well. However, the second one, smells absolutely horrible! I had it in my daughter’s room and she couldn’t be in there since the smell was so strong. I’ve had it in the basement to see if the smells goes away, but it hasn’t yet. It’s been 4 days. The first one I bought didn’t smell like this at all. It’s definitely going back.