The North Face Summit Series uses a bevy of technologies that emphasize breathability and warmth during heart-pumping efforts. Used together, they could change your winter layering strategy. Cold-weather aerobic pursuits test the limits of gear designed to keep you warm and dry. The North Face Summit Series has new apparel with new approaches to overcoming those limits for a more comfortable year in the wild. Below is an overview of traditional layering philosophy and how recent innovations have shaken up that norm. Then, we go over key apparel pieces from The North Face Summit Series that showcase the brand’s latest…