These mittens are amazing! The knit outer shell takes alpaca's naturally temperature regulating and moisture-wicking properties and enhances them with the ultra-fine Boucle style lining that wraps your hand in comfort and another layer of insulation. This 1-2 combo works together to keep your digits warm and protected from the elements. The shape and placement of the goatskin leather protects your palm while still giving you full use of your thumb and fingers. The goatskin leather palm is naturally water-resistant and extremely durable and will become softer and more supple over time.