100% memory foam 100% gel cooling memory foam great for back pains,knee,hip,ankle and joint pains. Perfect for pregnancy and maternity, For back,meileju pillow for sleeping back pain is designed to help improve spine posture and help reduce strained back muscles and ligaments in the back, side, and stomach sleeping positions. Super-soft, machine washable outer velour cover. Inner mesh liner increases comfort and breath-ability. Easily removed with zipper for simple cleaning, durable cover provides breathability and moisture wicking properties. Top rated pillow with best material Premium medical memory foam filling, Most memory foam pillows retain too much heat, making you sweat during the night. For that reason meileju pillow is made of a high-tech memory foam infused with cooling gel, allowing for a non-irritable and recharging sleep. 2 PACK Pillow