Built with AlpacaTek Technology® for ultimate thermoregulating capabilities, the Stretch Lite Vest lets you focus on the trails ahead. Designed with two insulated body panels and a maxi-stretch side panel for comfort and increased range of motion, this running-specific vest is made for the athlete who demands function, but still needs a garment classy enough to wear around town. It features extra insulation in the hood and side pockets for added protection against the elements, and wicks away moisture at an 85% higher rate than Merino wool thanks to our Alpaca Dry Fusion Technology®. Warm, antimicrobial, odor resistant—what else do you need in a year-round running vest?