From the manufacturer

Women's HeatGear Armour No-Slip Waistband Ankle Leggings

HeatGear Armour 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 matter what.

• Compression: Ultra-tight, second-skin fit.
• Super-light HeatGear fabric delivers superior coverage without weighing you down
• Material wicks sweat & dries really fast
• 4-way stretch material moves better in every direction
• Ergonomic flatlock seams deliver a comfortable, chafe-free fit
• High-rise UA No-Slip Waistband for optimal coverage & support that stays put with every move you make
• Side drop-in pocket