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Bought the Sol one.
I was riding bcm with @ad441 and at about 350km in and 2am was too tired to ride on (hallucinating sheep, followed by trails of light). Decided to stop and sleep in a porch with a emergency blanket. Did I mention it had been raining? It had, loads. Anyway, just as I lie down on actual freezing flagstones it stops raining and the sky becomes totally clear. I doze for an hour under the blanket, then wake up and realize I'm freezing , hopefully to death. Get up, shivering horrendously but feeling really really hot, which can't be good so decide to ride really fast to warm up, within the first 10 pedal strokes my knee blows up. I then had to walk all the climbs back to the youth hostel. Took all night.
It was appaulling.
The emergency ones are smaller