Our L2 Proprius Grid Fleece Hoodie is the only thing guaranteed to work just as hard as you on the pre-dawn skin. Made from durable Polartec® Power Grid™ fabric, it provides an unparalleled warmth-to-weight ratio, as well as enhanced breathability and freedom of movement to keep you agile and cool all the way to the summit. For comfort and support, stretch panels at the bottom hem ensure a close-to-the-body fit. Part of the Summit Series™ collection - the world's finest alpine equipment.