UST - Ultimate Survival Technologies, SparkForce Fire Starter, Weatherproof, Flint Fire Starter, Orange WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov. Compact, pocketable flint-based fire starter ideal for ultralight backpacking, camping, hunting, and more High visibility orange ABS case with detachable cap protects flint, prevents accidental or unintended sparks Generates sparks in rain, wind, and other adverse weather conditions: Ignites a wide variety of tinder The SparkForce Fire Starter is a compact, high-performance flint based fire starter that generates sparks in wet or windy conditions.