Celliant Infrared Fleece keep hands up to 5 degrees F warmer. These high-tech gloves are powered by our own body heat. They recycle and convert escaping heat into infrared energy. They don't just trap heat, they return it back into the skin. Waterproof Liner Keeps Hands Dry. Enhanced Top of Hand Reflectivity. Meets ANSI 107-2015. Durable, Reinforced Palm.