EVERYDAY PERFORMANCE: Keep your kids comfy and ready for anything with our lightweight 170 GSM active base layer set - sleeker and lighter than our heavyweight winter thermal set. It’s the perfect pick for milder days, indoor comfort, or layering through the seasons. MADE TO MOVE: Designed for stretch, softness, and ease, this tag-free set features a long sleeve shirt with functional thumbholes, paired with high-rise leggings that move with her. A close-to-the-body fit and breathable fabric make it feel like a second skin. READY FOR ANYTHING: Whether she’s heading to school, lounging at home, or staying active with friends, this lightweight thermal set delivers. Moisture-wicking fabric helps keep her dry and comfortable from morning to night. ALL-DAY COMFORT: The soft interior keeps her cozy, while the smooth exterior allows for easy layering under clothing. Built-in UV protection and a tagless finish provide irritation-free comfort on sunny or active days. LIVE IN LAYERS, EVERYDAY: At Cuddl Duds, we believe comfort is a year-round thing. From school to sleepovers, our lightweight base layers for girls are designed to keep up - soft, stretchy, and made for everyday adventures. Give her the perfect base for every season with the Cuddl Duds Girl’s Lightweight Active Base Layer Set. This 2-piece thermal set for girls includes a long sleeve shirt and pull-on leggings, both made from soft, breathable, and stretchy fabric that moves with her. Ideal for layering or wearing on its own, this set offers year-round comfort without the bulk. At 170 GSM, it's lighter and more breathable than our heavyweight thermals - great for mild weather, indoor comfort, or days filled with play. The tag-free design helps prevent irritation, while the moisture-wicking performance fabric helps her stay dry and fresh through school, activities, and everything in between. With a close-to-the-body fit, 4-way stretch, and built-in UV protection, it’s a dependable staple for active kids on the go.