
These caps appear to be well made and feel very solid. It feels like one cap weighs more than all 4 caps that came with my machine which appear to be (and probably are) plastic compared to these. This would easily be a 5 star rating were it not for the lack of insoles. in one of the hats. Not sure if/when it fell out because it wasn't in the pocket or just never put in. I hope it didn't just fall out at some point, which would make me worried about other earbuds. Luckily they come with 5 so I was still able to replace all of the caps, the spare was only meant to be a temporary replacement in case one gets lost and I need to order more.