From the manufacturer

Girls' HeatGear Shorty

HeatGear is our original performance baselayer—the one you put on first and take off last. So we made it extra comfortable by wicking sweat and stretching so you can move. No athlete can go without it.

• Fitted: Streamlined fit that’s not too tight or too loose.
• Our original HeatGear fabric is super-light, breathable & dries fast
• Material wicks sweat & dries really fast
• 4-way stretch material moves better in every direction
• Strategic mesh panels for added breathability
• Exposed elastic waistband with wordmark detail