Comply Memory Foam Replacement Earbud Tips for Bose QuietComfort, Ultra, II | Ultimate Comfort, Secure Fit, Superior Noise Isolation | Black (S/M/L) (3 Pairs)

I've been struggling for years with the QC2 earbuds. So bad to the point that I went back to headphones and put them on a shelf to collect dust.One trip, I forgot my headphones and had to grab the buds again, struggled with them falling out while eating, sleeping, walking, etc. I figured enough time had passed that better options may be available outside of what Bose offered (I did try the Bose pack of alternate sizes as well).These snap on and fit secure on the ear buds. They fit in the case and charge fine (Medium at least). They are much more comfortable, they don't fall out of my ears, the noise cancelling is far better with them. I can't speak to endurance yet, but the fact they come in a 3 pair pack is very nice. Hopefully they are still for sale if/when I need to buy more.

Best fitting,will form to any ear,these will also improve noise cancelling and because of all that your bass will improve also,I bought Comply tips for all my ear buds and highly recommend

They are soft, but it comes with a screen which means the sound now goes through dual screens, thus reducing sound quality. Then I noticed that the buds noise cancellation does not work at all with these tips. I tested both these tips and the OEM ones. The OEM ones allow for amazing noise cancellation, while these comply tips make it sound as if you have zero noise cancellation. Refuding ASAP.

I learned a few things getting these eartips and I think these are important tips for people new to earbuds:1. My left and right ear canal are slightly different sizes. I didn't realize it until testing each ear with these foam tips. Apparently this is a common asymmetry. Once I swapped to the right size for each ear, the fit and ANC improved both with and without foam tips.2. As the title says, ANC is improved (very slightly) and fit is tighter, but there is a larger decrease in sound quality. This was apparent when listening to any music with lots of high treble notes.3. Bass is improved (very slightly). Since the fit is tighter, naturally the bass is improved. But the bass on these are already very good without foam tips, so not a huge improvement.This product is a great solution to those struggling with the perfect fit, since the foam kind of conforms to your ear canal after inserting them in. If however you can find a mix match fit with the regular tips, you will find the sound quality is a degree higher than with the foam tips. Whether they are worth it for you really depend on if you are struggling with the correct fit.TLDR: Great for getting the perfect fit and maximizing bass, but reduces sound quality.

The tips provided by Bose for the QC 2 didn’t work for me. My skin gets oily, as well as my ears, and the silicone tips can never stay seated in my ears for long. Even when they’re in tight they feel like they’re sliding out and I need to readjust them constantly.I have similar tips for my AirPod Pro 2 so I thought I’d give these a shot. They’re exactly what I needed! The QC 2 now stay put in my ears with no issue. I can even move around/work out/run and they still stay put.Sound quality does sound a tad bit muffled but the trade off for having ear buds that I can actually use and that stay in my ears is worth it. I will NOT be going back to the factory/oem silicone tips.For those complaining about ANC degradation I found that by linking my QC 2 with the Bose app on my iPhone I was able to make sure the proper noise cancellation mode was always selected, which should be “Immersive” if you want maximum strength ANC. The noise cancellation is still superb, and if anything more noise seems to be blocked out for me due to the ear buds having a tighter seal.All in all a worthy purchase for me. YMMV but for those who have trouble with the stock silicone tips always moving around and having to readjust give these a shot.

Initially really liked but tip become quite stiff and not as comfortable within just a few days

These ear tips perfectly replace the original ones that came with my ear buds. in fact, I think they are a little better because they are "squishy-er" and hold better in my ears when I am active. I bought the multi-size pack to see which was the best fit, and the large ones work best so I will be ordering them going forward when I need replacements in the future.

Very stiff and cheaply made. Muffles sound. Hurts to put in and out of ear. I'd rather use the silicone tips from Bose