These are awesome! My son is 4 and a string bean- he needs size 5t pants for his height but his waist is about a 2t size. He has autism and as we started potty training realized belts where a problem - he does better independently going to the restroom but couldn't open his belts. These are great because I can place it on the pants and adjust it once them its done! They will cause ruching in the back of the pants but it hasn't bothered my son.