The Stormproof Sweetfire Strikeable Fire Starter has an extra strong ignition head (stormproof) and is made from a byproduct of sugarcane: called bagasse. This important ingredient is already used around the world as a sustainable biofuel. The vegetable wax allows each match to burn for 7 minutes.
Stormproof means it can just burn when wet. Even after it was dipped in water. If the ironing surface and the box get wet, the ironing surface will still work, but must dry first so the surface is firm again. Until then, use the spare ironing surfaces in the box. If the matches are wet, dry them briefly before use. 8 matches in a box.