As someone who regularly goes to the gym and goes on runs, this retainer has gotten me back into wearing my glasses. I am someone who should wear my glasses all the time, but found it difficult while exercising. I decided I should try a retainer after I saw a friend using one. This has changed my workouts significantly. I love how thin it is, I almost never feel it. It makes it easy to keep my glasses on and even helps me not lose them. I need them to release even more colors!! The blue gradient is what I got and it's just so pretty!