What Our Gearhead® Experts Are Saying: “This vest is the perfect piece when you need a little extra warmth without overheating. The recycled wool insulation keeps your core warm, while the windproof front blocks chilly gusts on runs, rides, or hikes. It’s streamlined, comfortable, and ready for active layering.”Designed to move with you through variable conditions, the Smartwool Active Fleece Wind Insulated Vest balances warmth, breathability, and protection. A windproof, DWR-treated recycled nylon front panel shields your core from gusts, while 40g of Smartwool’s recycled wool insulation provides lightweight, packable warmth. Stretchy Merino-blend fleece panels improve comfort and mobility, making this vest ideal for layering during high-output activities. Thoughtful details like reflective accents for visibility and secure storage pockets round out a design built for running, cycling, or travel.