Perfect Design : Ergonomically designed knee pillow fits your knees support between legs. Your knees feel comfortable, provides maximum support. Help you relieve sciatica pain and pressure on the lower back. Keep your legs, hip and spine in ideal alignment while sleeping and improves blood circulation. Premium Memory Foam : The Inner material is premium memory foam which can retain its shape, never go flat, no more tossing, relief sciatic nerve and back pain, offers the right balance of support and extra comfortable. Weak up a refreshed morning Breathable & Removable Cover : Elastic cotton cloth cover is breathable, keeps air circulating. You will feel comfortable all the night. Easy to remove the cover with zipper for cleaning. Elastic Strap : Our knee pillows are equipped with a elastic strap, keeps the knee pillow in perfect alignment between your legs when you roll over while sleeping. No more hassles with readjusting the wedge pillow in bed, giving you an undisturbed rest Ideal Gift :Ideal for sleeping gift to keep spine alignment, help reduce the symptoms of sciatica, arthritis, back, hip, knee pain, and post-surgery pain and post-surgery pain. Great gift for All All Saints' Day, mother's Day or Thanksgiving Day.