1. It only takes 10 minutes to relieve pain.2. Simple and effective physical solution to soothe stiff lower back and help restore the correct lumbar curvature associated with continued use.3. High-density flexible foam design provides a strong, lightweight, and comfortable base.4. It cannot be used overnight as a regular pillow.5. Usually you need 1-3 days to get used to this pillow because your waist needs time to get used to the curvature of the new aligners. Once you Xi get used to it, you'll enjoy the ultimate in comfort