Purchased a couple sets of these for our wood stairs to keep our kids (human and canine) from sliding down the steps as they run up and down at warp speed despite or requests to not do so (shocker, I know). The gray treads compliment our carpet nicely, though they're a bit thinner than what I was expecting. The gripping on the tread is quite decent, though I do find that they tend to stray a bit from the position I set them in after a couple days. However, for the price, they're certainly worth it.