These are my go to hair ties and there is always one on my wrist. I have used their scrunchies and small hair ties which are both great. They do not leave a mark on the hair when taking them out of my hair. I have been very careful when using them but they do tend to stretch out over time and for their expensive price I wish they would stay for a little longer… yet I keep repurchasing them so obviously they’re doing something right. I also have their pillowcases which stay cool for a long period of time and I think help keep my hair better at night. I will say they are harder to hold onto based on the silk material but that is a given.