Gently Used, Like New SAFER, BETTER, AND LONGER SLEEP - Made with super-soft and supremely breathable merino wool, it helps keep your toddler warm when it’s cold and cool when it’s warm. That temperature regulation means that your toddler will sleep comfortably throughout the night– and that means a better night's sleep for you too. Cuddly-soft organic cotton outer adds to the comfort as it's perfect for the most delicate skin.