>>678249>(Sort of a big matchstick glob on top of the flare, with a striker on the cap)I carry two in my pack (snow and dirt), another two on my sled.
The ones I carry in my pack I keep in a ziploc baggie to keep them dry, rolled up with some heavy-duty trash bags. These come in handy as a wind break, poncho, sack to gather parts if I yardsale a sled/bike, whatever... used one last week to cover the vents of my sled when I had it on the tail end of a tow rope. That roll of flares in ziploc plus trash bags goes into a sleeve that keeps it all together.
Local hardware store sells flares in 3-packs, I buy a new pack every year or two and rotate them out between pack, sled, and finally into the truck. The manufacture date is printed on the flares.
If i'm out camping I'll take the oldest ones from the truck to start the campfire, which keeps my supply in check. (Otherwise I just use the propane torch from my toolbox.)