Just....OK. [SEP] I'll say these are just OK. I have really thick hair, so regular hair ties don't work wrapped twice because the weight just pulls them down and out. I first have to stretch out a hair tie so I can wrap it 3 times without it snapping. This usually means my ponytail is nice and tight and it doesn't budge, but it also means I have headaches. The first 2 or 3 times I used it, it help pretty well...but for lounging around the house. I can't imagine trying to do any kind of rigorous activity with this in, or it would fall right down. After the first use, it did stretch out, but after putting it in hot water it shrank back down to it's tiny self. After the 3rd time trying to shrink it, it only goes down to the size of a normal hair tie....which also means it doesn't hold as tight anymore. I do like wearing them for around the house though because it does hold up the hair and doesn't give me a headache. I haven't noticed the crease in my hair and it also doesn't leave marks on my wrists from being too tight. So, all in all, they're OK.