The protective film on the second side, which is completely invisible, can only be removed after firmly sticking it to one surface. And even then, with a little persistence, one can barely lift it by hand, it doesn't seem to come off at all. I had to search for a related video to understand what was happening. Very durable, so much so that I wouldn't recommend it for temporary use, it doesn't come off at all!

Excellent. Transparent and very sturdy. I think it can hold me on the wall too, although I will never test this theory.