Our new and improved filling process makes firing up these little pocket-sized furnaces easier than ever. They provide up to 6 hours of gentle, consistent heat. They're sleek - designed to fit in any pocket - and are refillable so you can use them on your outdoor adventures for years to come. Warming bag and fill cup are included. The Zippo Hand Warmer comes with a one-year guarantee, making it a perfect fit for any outdoors enthusiast.