In winter, keep the wind out and stay warm. It can be used for doors of exterior doors, living room, bedroom, balcony, etc. pets can pass easily. Magnetic Thermal Insulated Door Curtain, Various Sizes, Wind and Cold Proof, Pet Friendly, Suitable for Air-Conditioned Rooms and Heated Rooms, Curtain Size is 32″x79″ Black, Fit Door Size 30″x77″.