UPDATE: 2 months after purchase - finally tried turning them around, as recommended in video for my type of hearing aid, even though it seemed like a wrong idea to me - it works fine and makes taking them on and off MUCH easier - and they stay on during use. Haven't had the batteries die when I sweat heavily. 5 star performance, 2 star price. ORIGINAL: The small hole was too tight for my ear inserts. Would have to remove the insert cushion and retaining tab - both of which fit by compression - removing them off on for cleaning would probably loosen them too much. Fixed the issue by trimming off a section of the small end (see picture). Insertion is much more reasonable like that and they stay on fine. I like this option much better than theirs of turning it around. Reduces wind roar (driving with window open at higher speeds) very well. Batteries have not gotten wet from sweat, yet, after a couple moderate sweats. Ordered a second set. Can't give 5 stars to something I had to alter to use. Also a bit pricey for what it is.
Rating:
[5 of 5 Stars!]