Zippo A-Frame Hand Warmer (Chrome) for $12.06. Shipping is free on orders over $35. If needed, use this Filler Tool to pad the order for free shipping. Here is a screenshot for your reference. It provides up to 12 hours of warmth with one filling and measures 4.25″W x 1.75″D x 8.25″H. Most places have it for about $22.