The Women's Under ArmourA(R) 3.0 Base Layer Crew is an all-season base layer offering midweight warmth at a variety of activity levels and cold temperatures. Odor control technology effectively neutralizes odor to keep you fresh. A soft, brushed grid interior traps air, managing your body's microclimate. This innovative material also wicks sweat, dries quickly and its 4-way stretch moves better in every direction. 91% polyester, 9% elastane offers improved stretch with a smoother hand feel Midweight warmth for all-season wear Odor-control technology effectively neutralizes odor Brushed grid interior traps air next to your body to manage your body's microclimate Moisture wicking and fast drying 4-way stretch moves better in every direction