Janus 100% Merino Wool Baby Kids Balaclava Machine Washable Made in Norway Double layered. Made from soft, non-itch merino wool, kind to the skin and keep your child comfortably warm. Janus wool has the capacity to absorb up to 30% of its own weight in moisture, without feeling wet. Merino wool has a high air content and therefore a high capacity for regulating body temperature. Janus baby wool collection is perfect for both summer and winter. Easy to wash in the machine (85 F degrees) and can be tumble dried at a low heat. Size 47/49, head circumference 47-49 cm (0-12 Months). Size 49/51, head circumference 49-51 cm (12-24 Months). Size 51/53, head circumference 51-53 cm (2-6 Years). Size 53/55, head circumference 53-55 cm (6-10 Years).