These beauts are amazing. Brilliant ear protection with a very non-invasive feel while being worn. However, considering I have already managed to lose one plug after one night of use at a gig, I have understood that while immediately storing them back in the provided travel case reduces the chances of losing them, the operation is precarious to manage, especially when you have to remove your earplugs more often than once during the course of the night. Perhaps a simpler Open/Close mechanism on the provided case will solve the problem. As for me, I will be ordering another pair soon, unless I find the other plug by some luck.