Flexible Sitting Relief: If you have to sit for prolonged periods, this inflatable donut cushion is a lifesaver. It flexibly adjusts the air volume for your preferred hardness to help relieve pressure from sitting. Multifunctional Seat Pad: This cushion can be used in various ways. When used on a chair, it relieves tailbone pressure, helps correct poor sitting posture, and prevents bedsores. It can also be used as a back support cushion to alleviate pressure on the sacral and lower back area. If needed, it provides comfort for other body parts like the neck, arms, thighs, and ankles. Enhance Your Seating Experience: This cushion provides exceptional butt support, whether you're sitting at home, in the car, or at the office. When deflated, it can be folded and stored easily, making it an ideal companion for business trips and travel. Lightweight and Comfortable: Weighing only 0.5lb, this cushion has dimensions of 17.32x14.96x3.54 inches, making it suitable for most chairs. The inner oval hollow measuring 7.08x6.29 inches forms a breathable area that evenly supports the top of the leg and provides relief in the center. Fast and Convenient Inflation/Deflation: Though the set does not include a pump, inflating the cushion is a breeze. It's equipped with an updated valve, taking only about 10-15 seconds to blow up. The flocked surface is easy to clean; simply wipe it down with a damp cloth.