32The memory foam knee pillow that helps support proper alignment

Having your knees knock together when sleeping on your side is rarely ever comfortable -- which is only part of the reason why I'm a fan of this pillow. Its ergonomic design fits comfortably between your knees, helping keep your spine properly aligned so that you're less likely to wake up with back pain. "I've gone from pain waking me up multiple times during the night to sleeping soundly and having no trouble sitting the next day," raved one reviewer. "Changed my life!"