Purchased these as most would, a just in case item for the rucksack. On testing at home: soaked two matches in a mug of water for 3/4 of an hour. Both brown head sections remained intact on the matchsticks though both were soft after soaking. Would not strike on the container. Left on sunny windowsill to dry. The head material rehardened to similar to a dry match. Neither match would strike on the container but both did on a Cooks size striker board. Where only the dark brown head burnt, leaving the longer light brown section to smoke a bit but didn`t flare. Then lit one light brown section with a normal match which then burnt but without the flare of a new dry match ( control). Lit the second dried match with an ordinary pocket gas lighter. This too burned but again without flare. Match number four was then wetted under a running tap for a few seconds, struck immediately on the supplied container, lit and flared as the control dry match. No sufficient wind to check the windproofness at this time in an outdoor situation. Fans ect being a bit strong I think. Upshot keep your matches dry ( old 35mm film containers work well with ordinary matches ) have a spare pack in a different place and or a fire steel/ gas lighter. in short cover your back!!! It`s a lot of work doing it the tradional way! Why all the above? Find out what it can do before you HAVE to findout. Have fun.