100% extrafine merino wool - 18.5 micron, 190gsm Silky soft and super warm, our Long-Sleeved Merino Bodysuit is an essential layette wardrobe staple. Practically designed, with an envelope neck for easy changing, a wide trim for maximum comfort and internal fold-over mittens for those cold nights. Made with longevity in mind, high-tension areas and PRYM snap domes are reinforced.