Ergonomic thumb hole design for fingerless arm warmer THE PACK : allows free and easy finger movement while the gloves stay in place, great for winter wear indoors or outdoors, suitable for office workers, outdoor enthusiasts or those who need to use fingers a lot in cold days. DURABLE AND COMFORTABLE TO WEAR: these knitted fingerless gloves are made of acrylic, polyester and elastic hybrid material, which is soft and stylish, a great accessory to keep your arms warm during cold and cold weather.