Back pain relief - Our knee pillow fits comfortably between your knees and provides maximum comfort and support to relieve sciatica pain, back pain and pressure on the lower back.Breathable Machine Washable Cover: The longer silkier fibers of the breathable zippered cover increases airflow so you’re always sleeping cool and is machine washable for easy cleaningHigh-density memory foam - Innovative Design: The knee pillow is soft and supportive, giving you a welcoming feel that stays comfortable in any position while providing liquid-like quality that contours to your body, aligns your spine and improves circulation.Premium Bamboo Blend - Outside cover is made from our premium bamboo blend. Blend consists of polyester and bamboo.SUPPORT - Constructed for all shapes andamp; sizes, our lightweight leg pillow for lower back pain is extra-wide to cradle both legs and each foot comfortably.Easy Care - Removable, Washable Bamboo Cover. Washing Machine Safe, Tumble Dry Safe.and