The all-weather Fire Cube is a professional-grade fire starter that is waterproof, windproof and able to be lit in even the worst weather. Burns 8 minutes. You can have multiple fires by dividing each cube into 8 smaller pieces that’ll burn for 2-3 minutes. It can get up to 1300 degrees Fahrenheit, hot enough to boil 16 ounces of water in 10 minutes. The fire fuel burns completely smokeless, odorless and is nontoxic. Lightweight.