The ear impressions are really comfortable The ear impressions are really comfortable and I can wear them for a long time. They really enhance the sound by blocking noise. I would like to have received more detailed instructions to insert the custom buds into my ears. I had to use trial and error to figure out the optimal way to insert them.

Ordered Eartune Fidelity U for my IER… Ordered Eartune Fidelity U for my IER Z1R. Best tips with this IEM after trying lots of eartips. Solved the recessed mids problems with some songs, especially male vocals. Hearing more elusive details too. The only thing making me hesitate to give a 5 stars rating is shipping is so so and expensive.

Wish I’d seen them sooner. I couldn’t believe the difference these tips made in the sound quality of my Second Gen AirPod Pros. The the sound quality, volume, bass and noise reduction all very noticeably better. Plus the improved seal makes them much more secure. They stay tight and secure when running and biking. And for the first time i can wear they kayaking. I always feared one would fall out right into the water, but not anymore. If you’re unsure of the size, I’d go with the large. The memory foam like material can be squeezed, then expands in your ear to give that improved seal. The price is a huge bargain for the increased quality of sound you get.

I dislike having to rate so low I dislike having to rate so low, but I must given utter lack of seal I get from these (size L). The choice to not publish measurements is questionable. I utterly wasted $$ for 3 pairs of tips that give me zero seal. Quality of materials seems fine, but does me no good. I now have oval-shaped ear tips that will sit in a drawer, unused )hopefully I can trade them at some point in the future.

Don't work as well as the ones that come with the Airpod Pro 2 I ordered the medium ones, which is what I use for other products. The product claims to improve noise cancellation by making a superior seal with your eye. In my tests, they made less of a seal than what comes with the air pod pro 2. Very disappointed.