I'm gonna chime in here and I'm afraid there might be some backlash from a few members. Everyone seems to hype silicon tips. Personally, I haven't found a set that works for me yet. I've got Spinfit CP145, Spiraldots ( both of which cost me more than 2 decent balanced cables) plus all the stuff that came with any of the iems I own. From my experiences with silicones, all they do is make my ears itchy and sweaty and don't seal very well. Each set impacts the sound signature of the iem, and people are driving themselves crazy trying to get their iems to sound the way they want. I use FOAMS! Yes! FOAMS! In my case specifically: Newbee foams. Look guys, I've tried Complys (way overpriced and expensive for what they offer in longevity and comfort), as well as Dekoni Bullets. Both are uncomfortable AF, and the Complys have this Waxguard filter on them ( which muddies/recesses the highs), and the Dekoni's aren't even a memory foam...it's just a regular, itchy, scratchy foam: that doesn't conform to anyone's ear. The Newbee foams are way different though. They are a soft memory foam, with a smooth outer layer, that is more like a silicone tip; yet behaves like a memory foam. They can be bought in various sets; like wide bore/narrow bore, or and a longer or shorter length ( like longer insertion or a rounder, shorter version). Price is much more affordable than Complys or aftermarket silicon tips. They are available on Amazon, Ebay, or Aliexpress. And they make all my iems sound great. Great bass, mids, and smooth, detailed highs. No sweatyness or discomfort. I listen to all my sets with these tips for 3-4 hours. After that length of time, it's time to go to bed...or do something else.