Flyout Wool is an all-season superstar: it regulates your body temperature when it's warm outside, and keeps you toasty when the mercury dips. Since it's such a workhorse fabric, Oiselle wanted to design a silhouette that would go with everything, all the time. Enter the half-zip: It’s a classic design that works well as an outer layer for running (or a mid-layer for chillier pursuits, like skiing). It washes well, stays oh so soft, and holds up season after season. Bonus: it features the double pane watch window. Simply put? It's wool reimagined.

• Semi-fitted
 • Front Unique Half Zip
 • Watch windows on both sleeves
 • Thumbholes