Nature's Sway Mattress Protectors are made in New Zealand using 100% NZ wool. The natural lanolin provides the waterproofing and requires minimal care. Lanolin also has anti-fungal and anti-bacterial properties. Wool has a natural ability to insulate and regulate heat, keeping you warmer in winter, and cooler in summer. It is also fire resistant, providing a safe sleep environment without the need for synthetic fibres or chemical additives. Designed to fit a Nature's Sway Baby Hammock's natural wool mattress. It also fits a standard size moses basket or a stroller carry-cot. , , Washing Instructions:, 1) Hand rinse in warm water, 2) Dry thoroughly, 3) Press with hot iron through damp cloth, 4) Air thoroughly