QUALITY MATERIAL The wedge pillow is made with PVC and a flocked surface. The soft, non-sharp flocking provides a firm yet comfortable feel, helps maintain the temperature required by the legs, and supports safe, healthy leg elevation during sleep. It contains no harmful chemicals or strong odors and has passed a 24-hour leak-proof test, ensuring no air leakage or safety problems. It helps raise your feet above heart level when you sleep. PERFECT ALTITUDE Keeping your legs elevated, this leg pillow helps relieve knee, leg, and hip soreness; improves circulation; and supports recovery after leg surgery. It can hold a lot of air to adjust comfort, reducing leg swelling and back pressure. COMFORTABLE TILT ANGLE 45-degree incline. Ergonomic design. The pillow follows the natural curve of the calf, aligns the spine and tailbone, improves blood circulation and varicose veins, and supports ligaments and muscles. The leg rest offers a near-zero gravity feel to promote healthier sleep posture and improve sleep quality. WIDE APPLICATION Can be used as a daily sleep leg pillow, knee pillow, pregnancy aid, body wedge pillow, postoperative comfort pillow, and more. The correct elevation angle improves blood circulation and helps fatigue recovery.