A donut-shaped baby pillow made of breathable mesh material. - Design: Geometric pattern design - Color: Beige - Material: Mesh material - Shape: Donut shape Thank you for viewing. Prevents flat head syndrome and is comfortable even in summer. Mesh specification. Purchased in 2024 and used when the child was 1 or 2 months old, but the child didn't use the pillow much, so there isn't much soiling. Please understand that this is a layman's assessment. It became even cleaner after soaking in Linenna.