The Smartwool Smartloft Vest is designed for warmth on the go. This lightweight running vest is made with recycled nylon to protect your core from wind and moisture and lined with Merino wool to manage temperature, sweat, and odor. Smartwool’s regular fit is tailored for on-the-go comfort and is perfect for layering on chilly winter runs and walks. Three zippered pockets – two external, one internal – keep your essentials secure and your hands warm. The slim cut make it the perfect outer layer for a running outfit or a sporty look out and about.