I have tried so many different so called adhesive hooks in our bathroom to hang our flannels up, and none so far have managed to stay up despite only having to hold up a light weight.
This box of 8 are sturdy and sticky. To apply you clean and dry the are, peel off the protective backing then stick firmly to the wall/surface. With the backing being clear, I did find I needed to push out air bubbles with a dry cloth but so far they are sticking up well.
Happy to recommend. My only regret is that I didn’t order the patterned ones.
At the time of ordering they were around £5 for a box of 8. They come in a handy box so you can store them without damaging them or risking them getting lost in a drawer.