NO MORE COLD: Can heat up quickly in seconds and immediately give off heat , a great winter companion that always keeps your hands warm! : Best gift ideas in cold winter. Perfect for family and friends, Christmas, New Years or Winter LIGHT AND PORTABLE: Made of aluminum alloy and high quality PC, very , compact and elegant. Have an absolutely excellent Contact feeling. Perfect for indoor and outdoor use, easy to transport. SAFE: Optimized circuits extend the life of the pocket hand warmer and offer protection against overdischarge, overload, overheating and short circuits.