Nike Pro Hyperwarm Football Hand Warmer This is a  Nike Pro Hyperwarm Football Hand Warmer , a product designed to keep football players' hands warm and dry in cold weather conditions. The hand warmer is made with insulating fabric and a weather-resistant shell. It features knit cuffs to help seal in heat and an adjustable, quick-release belt for a secure fit around the waist. Some models also include a secure internal pocket for storing a mouthguard or a heat pack. The hand warmer is often used by quarterbacks and receivers to maintain a good grip on the football.