Be careful where you light these matches: Once lit, they’re not going out. Dunk ’em in water and they reflame instantly; bury them in snow and they’ll burn from underneath it for up to 23 seconds. They’re long (4 inches) and tough enough to light with gloves on, which made us rethink bringing any other backup firestarter, ever. The secret? The flammable part of the match extends halfway down the huge matchstick, meaning you get a chemical reaction burn for much longer than normal. Just make sure to pack out the sizeable detritus.