I purchase these bib for my son and love the idea of they be able to be wipe off instead of fabric that need to be wash . I purchase the 12-24month size and when they come , they do not fit my son 's head . my son be 18 month old and small for he size so I do not expect the head open to not fit . I be go to contact the seller and see if they will either return or exchange the purchase since it have already be open . for the amount of money I spend on the bib , I be not completely satisfy with the purchase .