If you&';re looking for classic children&';s thermal, look no further than Hot Chillys Originals. Improving on the qualities that made the first generation so popular, this updated thermal underwear has since become a classic in its own right. Made with comfortable micro-polyester fabric, this thermal is designed to last through multiple washes while providing the softness and breathability your kids need to stay warm and active. The success of Originals lies in an ideal warmth-to-weight ratio that won&';t leave your child shivering in the cold, but also won&';t have them looking like the Chillsbury Snowboy. Your kids will be snug and warm with a body-fitting stretch that goes wherever they go. Moisture Transfer Fibers to keep your kids dry Body fit design for next-to-skin performance fit Easy, comfortable feeling Contrast flat seam construction 4-way stretch UPF 30+ protection 92% Polyester, 8% Spandex Midweight warmth, body fit base layer Warmth factor 7 out of 10- Soft stretch performance fabric for warmth in cold conditionsBody fit- Designed to move with you, allowing full range of motion while staying against your skin