Compatible models For Smart forfour 2015 2023 Material and construct Durable material: Constructed from quality PP material for reliable strength and lightweight handling. Safety and protection: Prevents your dog from jumping out of the car window, helping to reduce injuries and accidents during travel. Design and storage Foldable storage: Folds compactly for easy storage when not in use and can be placed inside the car window area or other small storage spaces. Ventilation and safety function Window vents and guards: Enables fresh air circulation inside the vehicle while maintaining a secure barrier, preventing pets from sticking their heads out or attempting to jump out when the vehicle is in motion. Performance and compatibility notes Function: Provides a clear boundary to keep pets safely contained within the rear window area while allowing airflow. Size and fit: Specifically designed to fit the rear window area of the Smart forfour (2015 2023) to ensure proper coverage and operation. Use scenarios Long road trips with a dog: Keeps your pet safely seated in the rear area, ensuring airflow while preventing dangerous window interactions. Daily city commuting: Reduces distraction by confining the dog to a secure zone, enabling calmer driving and safer travel. Short errands or frequent stops: Easy to fold and store when not needed, with quick access for quick inandout trips.