I see. Over a long enough time I do find that these ones harden as well at which point I change them, however that’s usually a month or more instead of a couple weeks. I hope they work out well for you should you buy!

As heads up as well, the little pucks they come as are way too big for my ears, but you don’t want them to be too small either.

These are amorphous like a sort of putty, so I usually tear a puck in half, and then another into quarters, and then mash them together such that I have 75% the size of a puck for each ear. This insures they completely seal my ear, but also cant get stuck or anything.

This also has the benefit of not needing to worry about sizing though!