• Hi, Can anyone help me understand what the temperature ratings for sleeping bags mean?

    The night time temps in Scotland during the summer is around 10 degrees C, so does that mean a 10 degree bag is appropriate? This is for a bivvy, no tent.

  • First, check you’re looking at the ‘comfort’ temperature range, not ‘survival’ or whatever some manufacturers call it.

    In Scotland, I think I’d want to never have less than a 5C bag in summer, unless I was really confident of the conditions. Any altitude/wind can seriously lower the temperature.

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