This sleeveless vest combines 18-micron Australian Merino wool with durable Cordura® nylon using NuYarn® technology, creating a fabric that is soft, stretchy, quick-drying, and highly durable. Its ultralight 105gsm material regulates temperature and resists odor, making it ideal for intense summer activities. The slim, athletic fit offers full freedom of movement, and a discreet pocket provides practical storage.