The ALBATROS Pocket Warmer comes with an extra protective cover and charcoal stick that burns for about 9 hours. So long enough for a wonderful winter fishing trip. This trusted hand warmer is suitable for all outdoor activities such as: fishing, hunting, golf and for spectator at sports competitions. Including carbon pen and extra protective cover. Tip: Order a pack of carbon markers at the same time, so that you have warm hands throughout the winter.