So I had some trouble with the hammerhead v2 with it not staying in my ear and when it did, the textured metal was kinda uncomfortable for my ears. Then I remembered I had extra ear fins from my jaybird X2 earphones. If the fins haven't been stretched by using them on the jaybirds, they fit real nicely on the hammerhead pros. Interestingly, while they do "hook" to stay in my ears better, I think the extra space made by rubber ring has helped with the comfort too, keeping the metal from rubbing on my ears. Just thought this easy mod would be helpful for some with the same problem I had. Extra ear fins for jaybirds are a bit under 10 bucks on Amazon.