This Label helps guest and childrens remember which is hot and which is cold. Guests no longer have to guess which way to turn the faucet in our kitchen and bathroom. This cold hot sticker is of a high grade, it is especially friendly to children and the elderly. It is ideal for sticking on the wall behind the faucet, indicating the direction of the user's cold and hot water switch. Ideal for motels, guesthouses, holiday inns, hotels, nurseries and at home. And the size 1.42inch (36mm) is the regular size(median size), you can buy with confidence.