High Elasticity:Made of high-quality polyester material, encrypted mesh technology, better elasticity, better size compatibility, easy to use. Easy To Install:Just slide over the top of the car's rear side window, then pull down the sun visor to cover the window, and use the included cable straps to secure it, it will be more secure and won't fall off.When you're not using it, the car sun shade can simply be folded and stored in the storage compartment. Fits Most Cars:Only for rear side windowsCar window curtain have Good stretch and recovery ,Suitable for car window length is 35"-41"(90-105cm), Height is 15"-19"(40-50cm),Sedans, Hatchbacks, and Small SUV with curved/rectangular windows.(Please measure your car rear window size before purchase) Freely Roll Down Window:Not only can you roll down the window to breathe fresh air at any time, but also prevent mosquitoes from flying into the car, and enjoy a good time. Protect Your Baby:Protect your babies and pets from UV rays and sun blackout while resting in the car.Protect your privacy,prevent others from trying to snoop inside the car.