Keep your feet warm and dry this cold season, and add some foot support to your shoes with the ultimate foot gear. These ultra warm shoe insoles are made using the highest quality USA grown alpaca fiber. As one of the most sustainable natural fibers in the world, alpaca fiber is known for its luxurious soft feel, and is used to make clothing and textiles which are hypoallergenic, high performing, moisture resistant, temperature regulating, and durable. These insoles can easily be cut to size to fit any shoe or boot. SPECIFICATIONS Choose from Medium, Large and Extra Large sizes. 75% Alpaca, 23% Nylon, 2% Lycra Made in the USA. Gentle machine wash & dry inside out. Use warm water and tumble dry low. Do not iron or dry clean.