I have been using earplugs for years. I would not buy these specific ones again, as they do not fit well. As a result, they do not do their job since they do not stay in place.

Very durable, they can be washed and worn without losing their grip, unlike a well-known brand that you can find everywhere...

The best I have tried so far from silicone earplugs!
Don't be fooled by the size, yes they look small and square but when you cut them and place them, they are just fine, they last a long time before they start to soften and darken, and don't forget that you get 3 pairs and not just one at this price.
I randomly found them at a pharmacy in the countryside where they are more expensive, but now they also come in a hard plastic case which is better for storage.