This does a great job of stopping that pesky wind whistle when it's windy. My husband and I like to go for walks and I've worn this sleeve on my cochlear implant in very windy situations. Without it, there is a whistle that prevents me from hearing, but the cover alleviates that. I also feel better knowing that my CI's microphone is protected from dust with the protective cover. I love this little cover and appreciate it.
Rating: [5 of 5 Stars!]