The shades are made of PVC plastic film and help block most of the light and UV rays, protecting your indoor furniture from direct sunlight. Roof shutters are attached directly to the glass with suction cups. Can be connected to any window. Attachments are easy to remove without leaving any traces. It can be placed at any height above, below or in between the windows to provide optimal sun protection and privacy as required. Product name: Roller blinds Material: PVC Function: shading, light transmission, perspective Folding method: rolling shutter Installation method: built-in, directly installed on the glass surface Application: Suitable for smooth surfaces such as tiles, marble, glass, stainless steel, wallpaper, etc. Suction cup hook installation 1. Install 2 suction cups on the metal hook 2. Two suction cups installed on the glass window to exhaust air 3. Put another suction cup on the bottom hook to suck air out of the glass window. Package Contents: Quantity: 1 sunshade Accessories: 3 transparent suction cups Precautions: 1. Manual measurement, product size and physical error may be 1-2 cm. 2. The products are all taken in kind, but due to light, equipment, shooting angle and computer resolution, etc., the real objects and photos received may be different, and the real objects shall prevail.