Alpaca Wool surpasses Merino. Alpaca fibers, honed in the rugged Peruvian Andes over centuries, safeguard you on every escapade. Unique Semi-Hollow Fibers: Lighter Weight Enhanced Insulation Smoothest Fiber Scales: Moisture Wicking Softer without Felting High-Performance Fiber: Pack lighter, venture farther. Maximize your outdoor experience with the peak performance fiber.