PREMIUM MEMORY FOAM: REDUCE BACK, HIP, LEG, KNEE & SCIATIC NERVE DISCOMFORT. Relieve hip, leg, and knee pain with the Everlasting Comfort memory foam knee pillow and enjoy the best sleep of your life. The knee pillow is made of 100% premium memory foam. Superior to other pillows, it will not flatten over time. ERGONOMIC CURVED DESIGN: Enjoy cozy comfort and restful sleep. The knee pillow is made of pure, additive-free memory foam and its orthopedic contour keeps your knees or legs separated with ideal spacing to support and align your legs, hips, and spine. A truly ergonomic design with its soft curves and crescent shape is suitable for both men and women. It can also be used as a knee spacer during pregnancy or after recovery. WASHABLE & BREATHABLE ZIPPERED COVER: Air layer fabric (soft and comfortable, fits your skin) and hollowed-out design increase air movement, not stuffy, the air-permeable area is widened, which does not allow your legs to get hot. The cover is machine washable for easy cleaning. ELASTIC STRAP: Rest peacefully at night with the adjustable Velcro strap that keeps the knee pillow perfectly aligned between your legs while you toss and turn. (Fits thigh size: approx. 16-25 \") USE IN MULTIPLE POSITIONS: Place the pillow between your knees or legs when side sleeping, use it to elevate your feet, knees, or calves, or place it under your knees for extra support.