Product name: Head pillow back cushion Material: Flexible PP material Product features: curved slope design, neck pillow waist pillow two in one, easy to use, no need to install, a variety of use scenarios Lightweight and easy to use: The lightweight and portable design requires no installation and is easy to carry and use in cases where additional support is needed for long periods of sitting. High quality material: This office chair headrest is made of PP material to provide long-term support for your neck and back during long periods of sitting. Compact size: Measuring 18.5cm x 50cm / 7.28in x 19.69in, the compact size ensures that it fits seamlessly with most office chairs without taking up too much space. Comfortable design: The office chair headrest can be extended from 0 to 30cm in height, which can be adapted to various body types and sitting positions to ensure personalized comfort. Versatile: This office chair accessory offers a new level of comfort in your workspace with a versatile headrest and lumbar support. The bag includes a backboard and a strap.