The Craft ADV SubZ Wool Long Sleeve Tee 2 is the perfect base layer for hard efforts on chilly winter days. This long sleeve turtleneck is made with soft polyester and Merino wool jersey to make it as functional as it is comfortable. The wool keeps you warm in colder weather while the polyester quickly wicks away sweat to keep you dry. Plus, mesh vents at the sides and armpits keep the air flowing once your blood starts pumping in the middle of your run Features: Soft and warming polyester and Merino wool jersey Polyester mesh at sides and under sleeves Turtleneck lined with polyester mesh for extra comfort Reflective details at sleeve ends Thumb grip at sleeve ends