The North Face Women's Flex Long Sleeve Technical Training Baselayer T-shirt QUICK DRYING - WICKINGQuick-drying fabric moves moisture to the surface to evaporate.When you work up a sweat on outdoor adventures the Flex Long-Sleeve T-Shirt is what you want on. It's engineered with wicking FlashDry™ technology that works hard to keep you dry by pulling moisture from the skin and pushing it out from the fabric surface. The loose fit and flat-locked seams deliver all day chaffing-free comfort. Wear it alone or as a base layer under a fleece or jacket as the weather conditions and your activity level dictate.