Limited Quantity: Washable, Laundry tested by a third-party organization. Thin, low pillow recommended by a chiropractor. Soft pillow, low height, breathable. Pillow reduces stress on neck and shoulders. Height adjustable. Pursuing "lowness" and "comfort". Natural cotton sleep pillow (40x60cm / Extremely slim 2cm) Extremely slim 2cm ‐ Mercari: Shop from Japan