The SmartWool Women's Sport NTS Long-Sleeve Crew is all about delivering you superb comfort during your aerobic activities. Whether you spend hours hiking, running, skiing, or touring, this slim-fit baselayer gives you the performance you desire. Made with breathable, moisture-wicking, and quick-drying merino wool fabric, the Sport NTS keeps you cool in the heat and warm in the cold. Flatlock seams eliminate any chafing issues, while its semi-fit cut makes it easy to layer beneath your fleece jacket or hoodie.