Men's Expedition 1/4 Zip TopThe base layer that works everywhere. Office heating that can't decide between arctic and sauna. Early morning starts before the sun does anything useful. Full days outside when temps swing 30 degrees. You need a base layer that can handle all of it without forcing you to change halfway through. The Expedition 1 4 Zip is built with DUAL SURFACE Precision Blended Wool a lofted construction where each side of the fabric does something different. Inner