Our nui organic merino wool thermal zip bodysock is protection perfection. A full body glove of magical temperature regulating merino cocoons your little one and helps their fragile temperature mechanisms cope with thermal changes in the air around them. A full-length zip with a safety fold makes for quick and easy dressing. The generous rib fit combined with merino's natural elasticity allows for a lot of stretch and room to grow. The rib Zip Bodysock is one of our nui THERMALS. Made from a super fine 17.5 micron GOTS merino wool, certified organic from farm to finished product.