【Your Own Pillow for the Car!】 With this model, the cushion can now rotate and move up and down! The left and right adjustments range from 16cm to 28cm, allowing you to freely adjust the angle and position to fit your height, sitting height, and shoulder width. When not in use, you can flip it up for storage without obstructing your view. 【Turn Your Car Travel into the Ultimate Relaxation Space】 Have you ever experienced neck pain after sleeping in the car? A poor neck angle during sleep can actually lead to fatigue. By using our headrest cushion, you can improve the quality of your sleep and enjoy a relaxing travel time. 【Compatible Vehicles】 Installs on the headrest stays (support posts) without the need for tools. It can be installed on vehicles with a stay width of 7.5cm to 19.5cm. 【Installation Method】 1. Remove the headrest from the seat. 2. Adjust the width of the slide bar on the mounting part to fit the headrest stay and attach it. 3. Insert the cushion into the mounting part, and reattach the headrest to the seat to complete the installation. *If the headrest stay posts are thin, use the appropriate size adjusters to make adjustments. 【Product Specifications】 Material: PU leather x high-resilience foam urethane Set Contents: Headrest mounting part x 1, Cushion part x 2, 2 types of adjusters x 2