The Hot Chillys Toddler Originals Base Layer Set is constructed with spun polyester yarns for a soft hand feel and spandex to give it a 4-way stretch. A close body fit reduces bulk, and Moisture Transfer Fibers wick away moisture to keep skin dry and warm. The top features a crew neckline with self binding and the bottoms feature a covered elastic waistband. Your toddlers will love the softness of the Hot Chillys Toddler Originals Base Layer Set! | Hot Chillys Kids Originals Base Layer Set