Ergonomic "Wing" Design for Multi-Position Comfort The Ergofoam Butterfly Pillow features a unique ergonomic shape designed to cradle the head while providing distinct zones for side and back sleeping. With a generous depth of 46cm and a supportive height of 13cm, its "butterfly" wings allow for better arm positioning and shoulder clearance, reducing numbness and stiffness. Key Features: Specialized Butterfly Shape: The contoured "wings" are designed to accommodate your arms if you sleep on your stomach or side, preventing circulation loss. Cervical Support Zone: The center of the pillow cradles the head to maintain natural spinal alignment, while the sides are slightly elevated to support the neck during side sleeping. Generous Surface Area (55x46cm): The deep surface design ensures your head stays supported even if you move around, providing a stable sleep surface throughout the night. Perfect For: Stomach & Side Sleepers: The cutouts and shape allow for comfortable arm placement (hugging the pillow). Restless Sleepers: The shape encourages proper alignment in multiple positions.