Pre-dawn missions to the summit call for a few extra layers to fight off the early morning chill. The FW Apparel Source 4-Seasons Warm-Up Jacket keeps us warm and cozy as we set off down the trail, and as the day warms up, we can easily pack it away into our bag until we need it again. The jacket is packed with lightweight Primaloft ThermoPlume insulation, and a DWR coating protects us from light rain in case there are any passing showers. Best of all, we've got a stylish layer to wear to the brewery once we get off the trail.
