Get a better sleep with this LANGRIA Knee Pillow. This Knee Pillow is ideal for those who have difficulty sitting or sleeping because of hip, leg, back, or joint pain. By folding the cushion between your legs, it will help you align the position of your pelvis, hips, and spine. Proper body alignment can increase your blood circulation and relieve stress on the body to alleviate lower back pain, knee pain, and ankle pain. In addition, the memory foam conforms your body shape to reduce pressure and tension while you sleep, and the contoured grooves allow for comfortable positioning. This pillow offers a durable and reliable way to comfortably reduce and relieve back pain. Use it the way it will suit you best and have a comfortable sleep.