One of the best parts of Smartwool base layers is that they help reduce some of the uncomfortable distractions intense activity can produce. Our Women's Intraknit Active Base Layer Long Sleeve can help you feel drier, more thermoregulated, and all-around more comfortable. And, with mesh ventilation zones for cooling, a supportive fit that moves with your body, and minimal seams to help reduce chafing, this top will allow you to focus on taking your workout to the next level. So go out there and feel good doing it!