Craft Core Beat Thermal Midlayer Women'sThe Craft Women's Core Beat Thermal Midlayer is a versatile and lightweight layer for all your cold weather adventures. Whether you're nordic skiing, snowshoeing, or running in cold weather, a well designed midlayer will keep you warm and comfortable. The Core Beat Midlayer breathes well and is easily layered to fit the weather outside. In Autumn use it as an outer layer during your brisk morning runs. In the winter use it as a comfortable midlayer