UST WetFire Fire Starting TinderNon toxic fire starting tinder that burns even on a wet surface. Individually packaged lightweight solid cubes that can't leak or foul up your other gear. Burns at over 1,300. Long burn time. Safe, easy to carry and unaffected by wind or water. Works with any firestarting device. For best performance use with: UST Sparkie, UST BlastMatch and UST StrikeForce. Stores up to 5 years. The cubes leave none of the residue of other petroleum based products