Untreated Natura wool All our natural white woollen products are sewn from untreated 100 % Merino wool, maintained as close to its natural state as possible. It contains lanolin which is good for your skin and suits even the most sensitive skin. It is recommended that untreated woollen products be washed by hand. Some babies take naps outdoors all year round. Soft and porous Merino wool is comfortable in any weather. Our woollen one piece suit and a hood keep your baby warm in winter weather, but are also suitable for cool summer weather. Our thumbless first mittens and warm socks ensure your little one maximum comfort.