Easy to install: Just insert the headrest into your car - Designed specifically for your vehicle: Designed specifically for the new model of gym vehicles, so it will fit seamlessly.Perfect for sleeping in the car, or when you need to clean up your headrests, or to load a lot of luggage.Outstanding fitting! Headrest Storage Holder for Gymny/Gym Sierra. When sleeping in a car, the 4 headrests are stored together and reduces rattling noise, and includes a dedicated tray to prevent damage caused by the shaft.