Lights with a Single Spark - Start your stove or fire in seconds; Bio-Based Ethanol - Cook your camp food with fire blocks that burn clean, contain no fossil fuels, and are sustainably sourced from upcycled waste crop vegetation; 8 Minute Burn Time - A single cube burns at 1300 degrees for 8 minutes and can boil 500 mL of water; Stove Compatible - These fuel blocks are compatible with most folding cook stoves; Highly Portable - Weighing .5 oz. each, add to your pack, campfire cooking equipment, or travel bag; Weatherproof Fire Starters Build your fire in the most extreme conditions of driving rain, wind, snow, or cold; Fire Lite Fuel Cubes light and burn even when wet; 60-Day Satisfaction Guarantee; Single Cube Weight: .4oz