Why Merino Wool: It is eco-friendly and biodegradable-produced from renewable sources. Wool absorbs moisture and releases heat when it is warm, and in cold weather the natural crimp in wool fibers creates tiny pockets of trapped warm air that act as insulators, thus suitable for the whole year. Also perfect for new born gifts. Size: - 0 to 12 months Material: - 100% Australian Merino Wool Washing instructions: - Hand washing is required. - Choose a mild neutral detergent suitable for wool, avoid alkaline detergent as it might damage the wool fibers easily. - The water temperature should not exceed 40 degrees. - Dry naturally, avoid direct sunlight, direct heating and drying.