Type: air-activated | Duration: up to 18 hours Zippo 12-Hour Refillable Hand Warmer This refillable hand warmer has a sleek, compact design and gives you flameless warmth for up to 12 hours ...

According to Runners World, the Zippo 12-Hour hand warmer for its convenience, as it doesn’t need to be recharged and is easy to refill. It runs on lighter fluid and provides long-lasting ...