Specification: Material: Tracks: 4pcs ABS tracks Color:Black Size:50cm x 47cm Pls measure your car window as follows: Rails length: 50cm, you can cut by yourself if need We suggest 50cm length for front seat is better, avoid blocking the rearview mirrors. For rear window, it can be selected according to the actual size. For rear windshield, we generally recommend to use 2pcs 50cm width, connect two fabric together, it will be 100cm in total, the tracks can be sticked directly on the glass, it's very strong. Our advantages: 1.Easy to install, no modification required. 2.Filter sun light to improve the efficiency of air conditioning and provide higher level of privacy. 3.Exquisite drapery design shows elegance and nobleness 4.Strong plasticity, easy to fit. 5.100% brand 3M double sided adhesive Package Includes: 2 x Car Window curtains 4 x tracks 2 x Tiebacks 2 x Plastic plates for tieback Friendly Tips: 1.Considering the rail viscosity, after install the rails, please install curtain after 24 hours. 2.The size is measured by hands, please allow minor error (1-2cm) of measurement. 3.Photo color might be a little different from the actual product due to color display of different monitors.