I think it is a wax impregnated cotton. I have it mostly because I bought three military fire starting kits, for the spark lites, and ended up with a fair bit of tinder quik as well.

Yesterday was a total failure. The tinder quik would not take a spark.

I keep a spark lite on my keys. I fluffed the tinder quik (A LOT, despite it being super flat from two years in my wallet), thought it would easily take a spark, but nothing happened.

I'm sort of under the impression the spark lite isn't producing enough spark. I wonder if, from being stored on my keys, the spinny part has spun so much it has reduced its throw. This seems unlikely.

Tonight I'll try lighting the old piece of tinder quik with a new spark lite, a new piece of tinder quik with my old spark lite, and new with new, hopefully this goes better. I may also try an old piece of tinder quik with a larger piece of man made flint.

For the record, I have previously lite tinder quik with a spark lite and it worked very well.