The Men's FIRST LIGHT Hoody by Black Diamond is an all-season performer, with warmth, stretch, breathability and adjustability on the mountain during activities. Synthetic insulation stays warm even when wet but breathes easy in milder temperatures. The face fabric has a Durable Water Repellent treatment to shed light moisture and snow. You can adjust the climbing helmet-compatible hood to your liking. Underarm gussets give more motion. The primary fabric is bluesign-approved.