Doing sports and being active outside in the cooler weather calls for a base layer. Base layer sports and activewear styles are offered in many different styles of shirts and pants. Many use insulated fabric to keep you warm while the cold air whips outside your clothing. Many base layer fabrics wick away moisture keeping you cool and dry. Some sports styles of base layer clothing have a compression fit to flatter your silhouette while giving you a warm, tight fit at the same time. This helps insulate your muscles. Base layer clothing often has flatlock stitching and a tagless construction for comfort. Base layer sports clothing keeps you performing at your very best, no matter the weather. They also can be worn under any sweater or other shirt for casual wear. Many of the base layer fashions can even be worn to sleep in the highest level of comfort. Whether you are playing sports outside, or lounging in casual attire, there is a warm and cozy base layer for you. Shop HerRoom for the latest base layer sports wear and activewear fashions.