I just purchased these after looking at a lot of similar products and overall, so far, I am very pleased. I had always blocked my items on top of the ironing board or on towels on the floor, but decided these would be a good investment (a little pricey for what they are, but seem to be nice quality) Some of the reviews mentioned an odor. Being very sensitive to odors, I was concerned about that; however found almost none. If I put my nose against the blocks I can barely smell a trace of an odor,See full review