Our trees have a real tree trunk.
The leaves made of fabric are UV resistant. It means that the leaves can resist the suns UV radiation for a longer period of time, and keep the color better than other products.
They also tolerate water. But do not expose them to strong wind, there is risk the branches will be torn apart by the wind.
The plastic, which is used among other in branches and in certain trees, such as Buxbum and Cypress, is recycled LDPE plastic.