Specifications: Color: Black Dimensions: 20 x 23 cm Material: PVC How to install: Step 1, Clean the window with a cloth. Step 2, spray misted water on the glass. Step 3, peel off the protective window from the vinyl backing and place it on the window with the desired design. Step 4, remove air bubbles. Notice: In general, we recommend staying outside the window, but if you cannot reach dangerous windows from the outside, you can put it inside, but the effect may be slightly affected.