Innovative Platinum-Catalyst Flameless TechnologyLike all Warmawear products, this hand warmer has been designed with convenience, comfort and safety in mind. Refuel the hand warmer using the included funnel to carefully pour lighter fluid into the body of the warmer. Replace the platinum-catalyst cap then use an open flame (from a lighter or match) to ignite it. After ignition, replace the lid and slide the hand warmer into the included bag for extra protection.
Please note: No flame should be present. If a flame is visible, wait until it disappears before replacing the cover