Easy to apply and adjust once stuck on. Really nice, colourful addition to a bedroom. Comes with magnetic butterflies that can be used on metal or they can have a small sticky pad added on (included). You get a sheet of sticker butterflies and a little box of 3D magnetic butterflies which initially need folding to look more realistic (and a sticky pad if you want). Then you’re ready to get going. I love the designs on them and the quality of the materials used to make them.