SpinFit CP100 Plus for IEM - SS - Medical Grade Silicone Patented Eartips, Secure Fit and Supreme Comfort, Reduce Allergic Reaction, One Set Fits Normal and Thin Nozzles(2 Pairs)(with Inserts)

I've been trying out different tips for my Sony WF-1000XM5 In Ear Headset. Until I tried the SpinFit CP100 Plus (Large) Silicone tips, I found I was not getting a good seal with other brands & types vs the stock Sony supplied tips. The Large size of Sony tips seemed to seal OK but was marginal on security of fit during activity while also giving me a little discomfort in my right ear which apparently is a little tighter than the left. Despite this, I gave the Sony tips some more time before deciding they could be better and then trying a couple of brands of 3rd party tips that were all outperformed in my case by the Sony tips. Then I bought a set of the SpinFit CP100+ tips.The large size of SpinFit CP100+ is a bit larger than the Sony Large, but despite this, they are more more comfortable than the Sony's, for me at least; YMMV. The Medium SpinFit is the same diameter as the Sony Large and I may give the CP145 model a try just to make sure I have the right size and performance. The real and very pleasing surprise with the CP100+ was the immediate improvement in sealing with a resulting very substantial improvement in sound quality. These will never compete with my home system speakers, but the jump in audio performance was quite literally astounding. Your results might well be different, but I was almost shocked at the magnitude of improvement I got.For travel and office use which is my use case for the In Ear Monitors, I am very pleased and recommend you give these a try as they are quite reasonably priced for a two pair pack. Just keep in mind that the size is a little different than Sony as is the shape. With respect to security of the fit, I could not shake these free no matter how violently I tried to shake my head, so workout use appears to be just fine too. I haven't checked out the full suite of Sony features in detail with these yet, but so far, the headset appears to have no issues responding to voice or movement based control and transparent mode is still usable, if maybe degraded a bit.The packaging is also very good, opens quite easily to display the instructions, and leaves you with a small two piece blister pack you can keep your spare set in. Even with the slight discomfort (easily bearable) in my right ear, I am much happier. As I said, I may give the CP145 model a try just to see if there is a little more to be gained with their slightly larger aperture and longer shape. Either way, I am sold on the SpinFit brand that in my case at least has really brought out a lot more of the XM5s performance and utility compared to the stock Sony tips. 5 stars.

The fit, sound, and styling 100% improved over the original’s on my Soundcore 4NC ear buds. Upgrade is worth the money in muly opinion.

I bought them to improve the sound quality of headphones that already sounded good. The result was that it didn't make much difference, but the earplugs still felt very good and comfortable and sealed as well as possible given their size and length.

SpinFit CP100 Plus for IEM FOR THE WIN! True wireless music lovers REJOICE! I bought the Sony WF-1000XM4's within the first week of their release earlier in June. The clarity, the bass response, the "OMG what is this!" reaction to the BEST active noise cancellation available today. Hate to admit it but the Sony WF-1000XM4's are worth every nickel of that staggering $279.00 price. I used the smallest set of eartips that came with the Sony's and they were great but lasted only a month and a half of service with relatively "light" daily use. The Sony eartips eventually tore and, being a fellow who LOVES music and can anticipate disaster, I had ordered the Comply eartips. I purchased 2 sets of the small size. Later, in a Sony product related online forum, someone mentioned using the SpinFit CP100 Plus for IEM and absolutely RAVING about these eartips. Intrigued, I found them and although somewhat questioning the relatively high price for eartips, I hit the purchase button. Now, 2 months have passed and the replacement pair of Comply eartips gave up the ghost and I installed the SpinFit CP100 Plus for IEM. I almost instantly I KNEW! These eartips make an already great experience with the Sony WF-1000 XM4's into something approaching sublime Perfection. The smooth silicone slips easily into the ear canal and I don't experience the weird "binding" sensation even on a humid mid-September day in Washington DC. No sweaty, or sticky feeling inside my ears. 100% GONE. The Sony's feel more stable and secure in my ears! ALL of what I mentioned earlier in my review of the Sony's: Clarity, Bass Response, Snap, Articulation and separation of vocals and instruments, and YES, that magical Sony active noise cancellation - it's ALL THERE but even MORE! Adding the SpinFit CP100 Plus have transformed what was already a great true wireless experience into something Magical. It's a shame because Spin Fit barely advertise that their eartips fit Sony's flagship earbuds but THEY DO! I am now also keenly aware that the "Achilles heel" of true noise cancelling earbuds (or at least the Sony's) must be the eartips. Sony don't even offer an "extra small" size, and even the "medium" Sony eartips were way too large for my ears. The SpinFit CP100 Plus for IEM "extra small" size have made me even happier with my purchase of the Sony WF-1000XM4's. Buy these without hesitation, and if you happen to own the best noise cancelling earbuds available today (SONY XM4's!), these eartips are the BEST upgrade you could make to perfect your user experience. The extra small size is the icing on the cake. Do NOT hesitate to buy these fantastic eartips. I have just installed them so I cannot comment on their longevity, but that is AOK with me. I will be ordering several more sets of these incredible eartips.