Gorewear Base Layer Thermo Long Sleeve Shirt - Black Women's MediumThis base layer is designed to feel like a second skin using thermo stretch fabric and flatlock seams to minimize chafing. It efficiently wicks moisture away from the skin helping you stay dry and comfortable in any weatherwarm in winter and cool in summer. Thermo stretch fabric offers a snug second skin feel Flatlock seams and minimal stitching reduce chafing Moisture wicking design keeps you dry and comfortable year round