is the waterproof hair elastic for children. This specially designed model does not form kinks, bumps and/or stretch marks in the hair after wearing a ponytail, for example. The ends of this elastic are not made of iron, as with 'normal' elastics. This means that the Invisibobble is not harmful to the hair. The hair is not compressed in the Invisibobble, but rather distributed. This prevents the scalp from being pulled, which means you don't have a headache at the end of the day. The Invisibobble is water resistant. The cheerful elastic band has a strong grip and can also be removed from the hair easily and painlessly. Ideal for kids! These cheerful rubber bands are inspired by Disney's Frozen and have the characteristic blue and purple/pink colors of Anna and Elsa. Extra fun: put the rubber bands in the freezer for 5 minutes and watch their color cool! As if Elsa is working her magic on the invisibobble® KIDS elastic bands. Pros and cons Elastic with specially designed shape Kids Disney collection No kinks, bumps and/or stretch marks in your hair No iron at the ends Not harmful to your hair Divides the hair instead of compressing No pulling on the scalp No headaches after wearing Water-resistant