I have larger versions of these phone cord hair ties, and they are great. I've used them in my daughter's toddler hair...but these little ones are PERFECT! I can use them for a single pony tail, use them for two on top of her head...they are awesome.She has fine straight-to-wavy hair (straight, but wavy curls at the bottom).At her daycare, they often do hair, and she comes home in those disposable tiny elastics...I don't like them and was never one for pulling her hair back (that is why she has an awesome head of hair- it wasn't pulled out by tight hair dos!). So I sent in a little transparent container with hair snap-barrettes, these, and some of the larger ones. They use those now, though I didn't say anything about must-use. It turns out my daughter, 1.5 years old (!!) told them ouch, and brought her hair container and asked for those instead. They think its cute, I think it is because her hair is not being pulled out. Either way, these are awesome! I'm going to order more, because between the swim bag, mom-bag, her room, my bathroom, and the bin for her hair stuff...they kinda do travel. But SO worth it!