Ever take a great nap in the car, but when youre at your destination, you wake up with a sore or stiff neck? Yeah, it sucks -- and commonly happens when you dont have proper neck support. Our Car Seat Headrest Pillow changes that, providing all-over support for a better nap session. Behold: side pillows: Our headrest is made of sturdy ABS plastic with memory foam cushion. Incredibly adjustable Telescopic support helps you find your perfect positioning, allowing you to angle up, lower, and rotate your side pillows up to 180 degrees to accommodate various heights. From child to adult, adjust the pillows of this headrest to meet any passenger height for luxe comfort and support. Ready to add some cushy support to your passenger seat? Step 1. Choose from one of our two provided pairs of rubber holders to find your headrest poles best fit (you get 10-mm and 12-mm size holders). Step 2. Connect the left- and right-side brackets together (to form one rod), and secure onto your rubber holders. Step 3. Install the left and right pillows onto the road. Tighten the screw caps on both ends. Step 4. Check if the distance between both the attached brackets of the rod is within 1.18 in (3 cm). If it isnt, be sure to adjust the hooks of the pillows on both ends to create a more snug fit. Additional Details ------------------------------ Product description: Ever take a great nap in the car, but when you’re at your destination, you wake up with a sore or stiff neck? Yeah, it sucks -- and commonly happens when you don’t have proper neck support. Our Car Seat Headrest Pillow changes that, providing all-over support for a better nap session. Behold: side pillows: Our headrest is made of sturdy ABS plastic with memory foam cushion. Incredibly adjustable Telescopic support helps you find your perfect positioning, allowing you to angle up, lower, and rotate your side pillows up to 180 degrees to accommodate various heights. From child to adult, adjust the pillows of this headrest to meet any passenger height for luxe comfort and support. Ready to add some cushy support to your passenger seat? Step 1. Choose from one of our two provided pairs of rubber holders to find your headrest pole’s best fit (you get 10-mm and 12-mm size holders). Step 2. Connect the left- and right-side brackets together (to form one rod), and secure onto your rubber holders. Step 3. Install the left and right pillows onto the road. Tighten the screw caps on both ends. Step 4. Check if the distance between both the attached brackets of the rod is within 1.18 in (3 cm). If it isn’t, be sure to adjust the hooks of the pillows on both ends to create a more snug fit.