- Comfort and support: The cylinder roller supports your head, neck, and waist when you are at a desk, on the sofa watching TV, or reading. It is designed to support the neck, back, knees and other joints whether you are lying flat or sitting. - Gap filler and bed edge protection: The bed rest pillow covers the head, foot, or side of a king size mattress from end to end, helping prevent pillows, pets or other items from falling behind, under, or out of your bed. It can also function as a soft oblong foam pillow for other bed sizes when placed against the wall. - Soft, durable materials: Made with waterproof fabric and ultra-soft foam for long-lasting comfort. The round roller cushion is designed to resist flattening over time. - Ergonomic design and posture support: Round roll foam pillow provides natural alignment for maximum support and gentle comfort, promoting good sleeping posture and reducing discomfort in the head, shoulders, neck, lumbar and back. - Use scenarios: - At a desk or on the sofa for head/neck/waist support while working, watching TV, or reading. - In bed, along the edge of a king mattress to keep pillows, pets, and items from slipping behind or under the bed; also usable as an oblong pillow for other bed sizes when placed against the wall. - For general lounging to maintain proper alignment and reduce neck and back discomfort.