The Aisa vest offers exceptional warmth, designed to be layered over sweaters, plaid flannel shirts, or advanced athletic wear. Its nylon shell is insulated with a high-tech poly-micro fiber commonly used in mountain climbing and snowboarding gear, ensuring reliable insulation and water resistance. For care, hand wash, dry clean, or machine wash on a delicate cycle inside a knotted pillowcase, then tumble dry within the same pillowcase. Proudly made in the United States, this vest combines technical performance with practical durability.