Car Sleeping Headrest: Dual memory foam wings wrapped in leather to ease neck pain muscle tension. Balance, support comfort to absorb the pressure on your neck caused when driving for long hours Adjustable: 180-degree rotation for a variety of comfort positions. Adjust the height up down to find your desired sleep resting angle. When not in use, simply lift the comfort wings to gain space Ergonomic U-shaped Design: No more head bobbing The U-shaped design comforts both sides of your face, so when you suddenly doze off, your head won't fall to the side in pain and will rest comfortably Universal Fit: Accommodates all standard vehicles with headrest rods that measure 2"-6". Rubber stabilizers to select the right size to hug the headrest rods, with adjustable sliders to set the width Easy to Install: No special tools required Fix the support pole on the seat headrest poles, then install the plastic slots cover tighten screws. Supports adjust the angle for different heights