HeatGear Armour is the original performance baselayer the one you put on first and take off last. So they made it extra comfortable by wicking sweat and stretching so you can move no matter what.
Under Armour Men's CGI Print Leggings
Under Armour HeatGear Armour Leggings Cardinal 1361588-625 - Free
Boys' ColdGear Armour Leggings – Sports Basement
Under Armour Men's Heatgear 3/4 Leggings - Dowling Catholic Campus
Under Armour Mens Cold Gear Armour Base Leggings - Black
Under Armour Heatgear Printed Leggings Mod Gray/Black 1370326-011
Under Armour Cold Gear Mens Compression Leggings (Black-Charcoal
Tesla Men's Compression Under Leggings Base Layer Gear Armour Wear
Under Armour 1361588 Men's HeatGear Armour 3/4 Leggings
Under Armour - Armour Graphic ¾ Leggings
Under Armour HeatGear® Leggings Men - Carbon Heather / Black
Men's Leggings
Under Armour Men's Heatgear Armour Printed Leggings