SEE INSIDE Under 3Pcs Door Draft Guard Cover Stop Light Dust Cool Air Escape Protector Door Guard Floor Mounted Door Stopper  (Brown)

The Door Guard is made from a washable fabric that is abrasion resistant. Not only does the draft guard help keep the heat in and cold out, it also keeps dust, sand, and bugs out while also helping with sound insulation. You can save a lot of power if you are running an air conditioner in your room. An AC needs to work harder if there is air leak from the room, especially from under the door. Stop those air leaks. Makes heating & cooling your home more efficient. Blocks drafts from inside & out.