as a stage drummer i struggle to get a good fit and total isolation with shures normal tips, these ones do the job just great , but do NOT go out in the street , as you will hear nothing that could be dangerous to you !
comfortable and long wearing for me , allows me to keep volume very low - i suffer from hearing loss and tinnitus - always make sure to sanitise them before use as flange phones can carry germs and scratch your ear = bad infections .
one point taken away as they wear out and shrivel a bit after a few weeks ., so the isolation is not as good