Youth First Layer Bottom Cotton-Like Hand Feel Spun Polyester Yarn and Spandex Covered Elastic Waistband 4-Way Stretch UPF 30+ Moisture Transfer Fibers To Keep You Dry Easy, comfortable feeling Active lifestyle styling Machine Washable (Follow tag instructions) This first layer pant features moisture transfer fibers (MTF) and has a comfortable body fit design for next to skin performance and warmth. Hot Chillys Kids Thermal Leggings | Kids Thermal Base Layer