The Blazewear Infra glove is the latest design of an all purpose leisure glove to keep hands really warm in winter. Incorporating the latest 5 digit heat system now powered from reduced size battery boxes with extended wrist for comfort. Larger battery pocket with clear window for ease of use. Made from lightweight, water resistant nylon and fitted with waterproof and breathable Ultra III tec membrane. Gloves are supplied with battery boxes that take standard AA batteries (3 for each glove). Standard alkaline batteries can be used such as Duracell"s but as these are one use only, this is an expensive route. Better to buy NiMH (nickel metal hydride) rechargeable batteries such as the ones used in digital cameras which means you will have to buy a charger. We recommend the highest capacity available such as 2900mAh as this means that they will last longer. Now in 5 sizes XS - XL Heat location in fingers and thumb Uses standard or rechargeable AA batteries (not supplied) Up to 3 hour heating time from good quality rechargeables