These buds are loads better than the originals for noise cancelling, bass, and feeling secure in the ear holes.
Also amazing customer service and communication.
They work exactly as promised as the earbuds now firmly stay in place, which none of the 7 (seven) OEM eartip pairs provided with WF-1000XM3 could achieve. Sound insulation is good, noise cancelling is improved and bass response is better due to a more precise fit. I really like them.
The stock foam tips that come with these aren't bad but they aren't very good either. They decompress far too quickly so getting a good fit can be fiddly.
I use Comply on my iem's so decided to get some for the Sony's. After a bit of confusion because the UK site doesn't list anything compatible, I checked the US website and ordered based on the SKU codes listed there (make sure that you order the size equivalent to the stock sizes you wear).
Be careful fitting them to the device because they are a bit fragile compared to the stock tips but once they are on give them a good rolling squish and pop them in your ears. After a few seconds you can feel the Comply expand and listen as the ambient noise just disappears. They are extremely comfortable for extended use.
Plus, it must be said, Comply UK customer service is exemplary.
These outperform Sonys stock foam tips in every way.
Better isolation and bass response, more durable and very secure for gym sessions or runs.
All with the added benefit of mesh layer built into the tips to protect the earbuds.
They also fit in the charging case perfectly.
very good product, worth the buy