Not much USP of this product
I did not find it much useful, especially the price does not justify it. Cotton does a decent job, a putting on and taking off hurts as it creates vaccum which does suit my ears. Theres no return so its just a bet to purchase which was not winner for me. They look cute but are at the same time risky to carry as they can be easily lost as they are quite small.
I have stopped using it as well.