COLD-WEATHER READY: Help your kids stay cozy in the cold with our heavyweight brushed fleece 235 GSM thermal set - warmer and more substantial than our lightweight active base layer set. The soft fleece interior helps retain body heat, keeping her warm through chilly mornings and winter play. WARMTH IN MOTION: With a close-to-the-body fit, stretchy fabric, and a tag-free design for irritation-free comfort, this set includes a long sleeve shirt with functional thumbholes and easy pull-on leggings. Breathable material lets her move, run, and relax with ease. WINTER-LAYER VERSATILITY: Whether she’s heading to school, playing outside, or getting cozy indoors, this thermal set is a go-to layer for cold-weather comfort. Moisture-wicking technology helps keep her dry - even during high-energy moments. FLEECE-LINED FOR COMFORT: Brushed fleece delivers next-to-skin softness, while the smooth, pill-resistant outer fabric holds up to wear and washes. Built-in UV protection offers added peace of mind for sunny winter days. LIVE IN LAYERS, WINTER READY: For over 50 years, Cuddl Duds has created dependable, feel-good layering pieces for every generation. Our thermal base layers for girls are made to keep her warm, confident, and ready to take on the season. Keep your little one warm and cozy all season with the Cuddl Duds Girl’s Heavyweight Thermal Set. Made with a brushed fleece interior and a smooth, pill-resistant exterior, this 2 piece thermal underwear set for girls is designed for ultimate comfort during colder days. With a fabric weight of 235 GSM, it’s thicker and warmer than our lightweight base layers - perfect for layering under clothes for cold weather, snow days, or winter play. The long sleeve thermal top features thumbholes for added warmth, while the pull-on thermal leggings offer full coverage with a soft stretch fit. Built with moisture-wicking fabric, this set helps keep her dry and comfortable through school, outdoor adventures, or relaxing at home. The tag-free design, UV protection, and breathable materials make this a must-have winter base layer for girls. Whether she’s bundling up for snow or staying warm inside, this fleece-lined thermal set delivers the perfect balance of style, function, and all-day coziness.