The posts are quite thin so the clip at the back has a hard time grabbing it well. I lost one of the earrings within the first week of buying them. I think it must have been something simple like brushing my hair past my ear that pulled it out because I didn't play with them or do anything to loosen them. They were very lightweight so that can be nice while they're on the ear but that also made me not notice when I dropped one. They were cute otherwise.