MYN COZY UP Seamless Long Sleeve Base Layer  with higher collar neck is outstandingly comfortable and shockingly warm for its lightweight. The combination of polyamide and polypropylene yarns is warm and feels super soft against skin. The fibrous construction circulates air to evaporate sweat which helps you maintain a healthy performance body temperature. The neck opening is wide making it fit better under cycling jerseys. The MYN long sleeve base layer will maintain your comfort by keeping you warm and dry in cool conditions whether you are racing or training.