Before I ordered the ledge, I checked the dimensions and details. In the details it says the ledge can be flipped both ways and is magnetic. I took this to mean it would stick to my locker but now I understand it means you can stick magnets to it.
I currently have a B&Q magnetic shelf that I paid £8 for. It sticks to my locker well, holds a couple of books and my morning coffee. I treated myself to this one that cost £50 and now I’m stuck with it and have not use for it. Such a shame Mustard didn’t think to design them so that they could also stick to lockers.
I own 6 mustard pieces of furniture which I am absolutely delighted with.