PREMIUM MEMORY FOAM: REDUCE BACK, HIPS, LEG, KNEE & SCIATIC NERVE DISCOMFORT. Relieve hip, leg & knee pain with the Everlasting Comfort Memory Foam Knee Pillow and enjoy the best sleep of your life. The knee pillow is made with 100% premium memory foam. Superior to other pillows, it won't flatten over time. ERGONOMIC CURVED DESIGN: Enjoy cozy comfort and restful sleep. The knee pillow is made from pure, additive-free memory foam and its orthopedic contour keeps your knees or legs separated with an ideal space to support and align your legs, hips, and spine. A truly ergonomic design with its gentle 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 mobility, not stuffy, the air permeable area is broader, which will not allow your legs to get hot. The cover is machine washable for easy cleaning. ELASTIC STRAP: Rest peacefully through the night with the adjustable Velcro strap that keeps the knee pillow in perfect alignment between your legs while tossing and turning. (Fits thigh size: approximately 16-25") USE IN MULTIPLE POSITIONS: Place the pillow between your knees or legs while sleeping on your side, use it to elevate your feet, knees, or calves, or place it under your knees for additional support.