Under Armour Base 3.0 Leggings Pants - Women's 2012 - The Under Armour Base 3.0 Leggings are made for maximum warmth in the coldest conditions. Strategically placed ergonomic seams add to overall comfort by reducing abrasion in high impact areas. Built with Flatlock Seams the Under Armour Base 3.0 Leggings feel smooth against the skin and prevent chafing. Nobody likes chaffing. Plus, ArmourBlock™ technology neutralizes the microbes that cause odor before there is any odor at all, which results in moisture transport with maximum scent suppression.