ORTHOFIX Corrective Hip & Back Support PillowStop sleeping with random pillows between your knees. They slide. You wake up sore. Five knee surgeries. I know what Im talking about. Ive tried every pillow shape going this is the only one that stays where it should. I can turn over and its still there. Woke up with far less stiffness. Grinne Walsh, Kildare The strap is the whole point. A normal pillow slips out the minute you roll over. Then your knees stack wrong, your top leg drops forward, and