I've bought these three times now, because they're very good.
I throw them away when they get a little too yucky from using them every night to sleep, so I have to replace the package every once in a while, but it's money well spent.  They are very easy to shape exactly how you like.  For me, I don't want them pressed very far into my ear canal, so I just mold them into a flat disc shaped to my outer ear, and that works very well, especially coupled with my phone's sleep-noise app.  I highly recommend these.
Rating: 5 stars