Hitting the cardio hard? Determined to pick up the pace even during the winter season? Ready to hit the ground running? The ODLO Women\'s Active F-Dry Light Base Layer Pants offer a unique blend of polypropylene on the inside and PES on the outside which works to activate the muscles and is incredibly fast drying.Oeko-Tex Label - No carcinogenic ingredients, no formaldehyde, no allergy-causing dyes, skin-friendly pH valuePolypropylene fabric technologyPES outer layerEffect by ODLO - permanent, silver ion, anti-bacterial treatment that keeps odours in checkLightweight designElasticated waistband