Description With Megaheat® technology, your daily run doesn't have to suffer from weather delays. The New Balance Megaheat Competitor Half Zip uses your perspiration to activate cutting-edge, moisture-wicking fabric that helps raise your body temperature and protect you from the cold in comfort.
Megaheat jersey knit, 86% polyester, 14% spandex
Front and back reflectivity
Media friendly secure back zip pocket with ice trim