Onesie in Pure Ultrafine Merino Wool. Crew-neck model with long sleeves, enriched by delicate braiding on the front and comfortable opening on the back; made with real Akoya mother-of-pearl buttons. Made with the best Pure Carded Ultrafine Merino Wool. Fine and soft like a cloud on the skin. Hypoallergenic and thermally insulating, it helps to maintain a stable level of humidity and body temperature between fabric and skin. According to studies conducted by the global wool authority, the pure merino component is even therapeutic for children who suffer from eczema.