Never wet umbrella / Never wet umbrella

Surface layer coated super waterproof coating.
when an object and the contact between water more than 150 degrees, it will fall down. It is called "super waterproof".
Super waterproof objects and waterproof properties object is different, have waterproof coating umbrella surface, the rain comes to the beads with water in the umbrella face away. And this is called "lotus leaf effect".