This design ensures baby's feet are kept warm without the need for socks! This design is especially practical during the colder winter months. Shoes can be worn over the feet for extra warmth and protection. A practical design made in New Zealand and perfected in Organic Merino wool grown and processed without the use of harmful chemicals. Nature Baby merino provides premium insulation while also being highly breathable. It is soft, gentle, lightweight and durable and non irritating against the skin.