It is plastic film made of HDPE or LDPE. The main purpose is to protect your home against paint dripping, dust, mud and oil leaking. When you brush the wall, you can easily spread it and cover the
materials which to avoid dropping paint. And, when you travel for a long time or out of house, you can put it on furnitures to be dustproof or put it on the ground for waterproof and damp proof.