"What Our Gearhead® Experts Are Saying: ""This jacket is one of my favorites for chilly runs and hikes. The merino interior feels soft against the skin and manages moisture really well, and the 4-way stretch means it never feels restrictive. The thumbholes are a nice touch, and the fit layers easily without bulk."" We love workouts that don’t slow down when the temperatures drop, and the Smartwool Active Fleece Jacket is made to keep us moving. Blending soft-brushed merino wool against the skin with recycled synthetic material on the exterior, this layer delivers breathable warmth and protection that adapts to changing conditions. Four-way stretch fabric moves naturally with every stride, while a regular fit layers comfortably over a tee or base layer. Reflective hits keep you visible when you’re out before sunrise or after dark, and secure zip pockets stash keys and essentials without bouncing. Whether you’re running, hiking, or commuting, this jacket is ready for any adventure in the cold."