Hmm... I must have missed the discussion about this, as I feel this is the first I've heard of it. It seems like an odd thing to contract out. I'm likely to use mine while waiting for the bus, and here it it tends to vary from about minus 35 Celsius to plus 35 degrees Celsius outside. Although, when it's below about minus 15 I wouldn't be using it, as then I wait in a semi-comatose state.