SMARTWOOL WOMEN'S INTRAKNIT BASE LAYER CREW - NIGHTFALL BLUE DEEP NAVYThis minimalist style crew is anything but insignificant. Our Women's Intraknit Thermal Merino Base Layer Crew is a lightweight, super moveable top, made for all of your most extreme cold weather activities. With Merino Sport yarns and gender specific ventilation perfectly placed to maximize thermoregulation and breathability during high intensity activities, it helps amplify moisture management, movement, and comfort. When you're in our best base