The rubber they are made of feels very cheap and thin. It doesn't really isolate the sound like I was hoping, and since the rubber is so soft and foldable it doesn't stay in my ears for isolation. However, the material has a good grip and does not allow the bud to become as slippery as it would be without it. They'll probably be enough for me to keep using them for a while, but then again, if you want noise isolation, this didn't work for me. They offer a variety of sizes, but I had a hard time distinguishing between small and medium. Also comes with a rubber pouch which looks good if you're buying for that purpose. I think the price should be less than half of the asking price.
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