FENGJIDA Winfire Butterfly Large Self Ignite Platinum Catalyst Metal Hand Warmer/Lighter with Built-in Lighter Built-in light double as a cigarette lighter, you don't need to carry match or another Cigarette lighter to start it. The Butterfly hand warmer is a rugged, metal hand warmer with a high-polish finish and a sleek design so it easily fits into your pocket. The hand warmer is virtually odorless (great for hunters) and stays warm for up to 24 hours. Reusable with or Zippo lighter fluid and includes a convenient filler funnel and a case with strap. Large size 4"x2.75"X0.75", it is much bigger than the Zippo hand warmer Whether you're skiing, tailgating at the game, hunting, sledding, or enjoying any other cold-weather activity, keep a peacock hand warmer in your pocket and keep your fingers toasty warm.