Since we are in the age of having to use masks and I really don’t forsee that changing for awhile, these are a must. I’ve tried so many masks and none fit me right. These little toggles are very helpful to get that better fit. So easy to put on and since they are silicone – they stay put. Of course, these aren’t just for masks, they would help with any drawstrings you have. Well worth the already great price!