SpinFit W1 for IEM - L - Patented Medical-Grade Silicone Ear Tips, Double W-Shaped Tube Core, More Stability

I had some CP145s on my Moondrop Arias, but they would come off the nozzle too easily. These W1s have a much better fit and are snug and secure. Great sound and comfort too.

Yep, these are best, and help keeping huge Z1Rs in years, while working out, etc.Other tips even by same brand have thicker silicon, which can be argued provides a little better seal, but the downside is they are more "springy" causing them to slip out of ears with time.This are gentler, and thinner, they fixate in ears well, seal years ok too - if chosen large enough size.In summary I have spent hundreds of $$ on various tips to help keep behemoth Z1Rs in ears, this are best, because I rotate my entire stock few times and these are the ones.The downside of these is I still am trying to narrow down why happened what happened, but I used Isopropyl alcohol to clean these once in 2 weeks, and after each use they became larger - I know strange, maybe some property of this particular silicon formula. But I suspected this already when was about to clean them last time, - so I think that is it - if you leak alcohol onto inside ring, the ring becomes wider, so much that it is now completely out of size and cannot stay attached to IEMs anymore.This downside means I need to reorder these periodically, or if I prove it is because of alcohol, I may try soap and water instead and see how it goes with that. Because otherwise spending $9 every 2 months while not expensive, still means I have to setup entire logistic just to listen to my IEMs :)Update:I finally found an alternative to alcohol-based cleaner to prevent these from deforming. You can search up any hear aid cleaning solution here. The one that worked for me is Audinell, but I believe any alcohol-free formula will work. It also cleans tips much better than Iso alcohol. each clean helps keeping IER-Z1Rs sealed and in-ear for 3+ days

Nice improvement for my Galaxy Pro 2 buds, but they don't have a really tight fit onto the device. Comes off much easier then OEM. Helps with sounds, fit and ANC function.

I have tried almost a hundred different eartips for my iems. I think spinfits are my best fit. Bass but not too much...treble, but not too much. They stay in the ear and are comfortable.

I purchased a large when every pair i use has been a large from my iem packages but thesr run big so beware i should have bought medium now im stuck with them looking to give them away since they dont fit in my ear holes

Very comfortable, yet very good at isolating sound.I'm comparing these mainly to the stock large eartips that came with my KZ SZN PRO X IEMs and they somehow feel lighter, feel nicer on my ears, isolate sound better, and give me an overall better sound from my IEMs. Not as comfortable as memory foam tips, but also don't require the constant cleaning and intense care while handling that memory foam suffers from. They're very light, nice to the touch, and even somewhat sticky somehow so they almost 'stick' to the inside of your ears.

Good fit on nozzle (5-6 mm), very good seal, clean, well defined bass, not too boomy, great detail and air. Balanced sound. The stock ones were pretty good too, these are slightly better.Please note, these are not for skinny nozzle iems, their size charts give you the info. And people, don't buy it and then complain about the price. You made the decision.

Purchased for Meze Alba IEMs and the seal is perfect and the sound is better. I got a good seal from the stock tips but ordered these after some reddit recommendations. The seal on the spinfit w1 is much better and the tips are comfortable. Out of the the stock Meze tips the XL fit the best and the Spinfit size is L and fit better. I have the Dunu candy and Tangzu tips being delivered tomorrow but I might just return them unopened and order extra Spinfits. Highly recommended.