product Color: Black Good flexibility: Can adjust the angle and height of the pillow according to your needs. Main material: Breathable mesh and sponge pillow Al alloy clamp. Product Features: U-type sponge mesh pillow, anti-side inverted, can reduce head pressure, more breathable, lightweight, refreshing. Practical: If you do not want to use it or want to close the wheelchair, you only need to remove the headrest part. Easy to install and use, instructions are included. Can be used for wheelchair seat "16-20", stool. Instructions: Place the curved bases on the left and right hand tubes of the wheelchair and insert the U-shaped base into the right and left sides of the curved base. Adjust the width to the size of the head tube. Insert the head tube into the marbles to pop out and turn. The U-shaped base adjusts the front and rear positions of the head. After you have determined the position, lock the button with the bow base and the button of the U-shaped base Move the headrest to a suitable height. Tips: Press directly on the head of the tube on the pop-up, pull the head, do not take the U-shaped and with a curved base, the wheelchair can be folded directly Delivery content: 1X electric wheelchair headrestEasy to install and use: Depending on the actual situation of the user, the angle of the headrest and headrest can adjust height (high-back wheelchair can only adjust the height of the headrest, can not adjust the front and rear head angle). Note: Please make sure that the width of the wheelchair tube is suitable for installing the fixed clamp (approximately 14 ") Suit for 16" - 20 "wheelchair (product does not include wheelchairs). Practical: If you do not want to use it or want to close the wheelchair, you only need to remove the headrest part. Main material: 3D Breathable mesh and sponge pillow Al alloy clamp, light and strong. Good flexibility: Can adjust the angle and height of the pillow according to your needs. Fits the travel chair perfectly.