MyLello ponytail holders are super soft and stretchy for a comfortable and secure hold and will not break as they have no seam and no metal. Thick bands have more surface area for attaching bows than standard elastic hair ties or hair bands. The toddler - kids size is perfect for toddler's and children's ponytails, and for girls with long, thick, or thin hair. Wear them alone or attach a flower or hair-bow! Can be flipped inside out to show the rolled edges for a different look. Soft and stretchy nylon hair bands are "ouch-less" and non-damaging to hair, even for infants' fine hair! Size: approx. 5/16" height and 1.5 inches diameter relaxed and up to 5 to 6 inches when stretched.