These tips seem great, nice seal, nice isolation. Only issue I had was that they don't fit well onto my hexas. Go for something with a 600 core or maybe bigger if you are using these IEMS. Tips themselves are all good as was the service
Isolation is key to a great sounding IEM, these tips do just that. Extremely comfortable for long periods, highly recommended.
Isolation Series - 500 Core Memory Foam Earbud Tips
For me they work but the fit has to be right otherwise they can be a bit tight and can be uncomfortable....
I would suggest buying a multisize pack to see which size fits before buying an all one size pack..... Some iems are not listed but some deft investigation on Google will get you the sizes of the tips and you can match them to your iems.... It works for me anyways....
Bought as a replacement for another pair of Comply Earbuds that came to the end of their life well worth the money, highly recommended.