It's also interesting that he includes a butane lighter for being out on ice. Butane generally won't turn into a gas below -0.5C (31F). I guess you could break the lighter and pour it into the metal cup and burn it there as a fire starter? Anyone understand the rationale behind this one?
I doubt your pockets get that cold.
Seriously, keep it near your body and it will work fine.
Ah, good point. Your body would hopefully keep things warm enough. Plus if you've got matches and a Spark-lite (or other sparking device) as a back up, you should be in good shape.
I've definitely had problems with piezo-electric ignition lighters in the cold at altitude (8,000+ feet). I suppose the altitude of the location with the ice would have bearing on the
type of lighter one brings.
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