Athletic Works girls' thermal bottom delivers warmth without any annoying bulk so she can move around effortlessly. Made of cozy waffle knit, they help keep her toasty on colder days. They feature a soft hand feel with an elasticized waistband for a snug fit and ribbed cuffs to help lock in the heat. Designed for layering, they’re ideal for wearing under joggers, snow pants, or fleece pants.