Do you mean just a sleeping bag liner? If you're lucky with the weather you'll be ok but I think it might be a little cold at times, if you don't mind sleeping your cloths as back up though you should be ok, if a little smelly the next day.
@TheBrick(Tommy) started
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Do you mean just a sleeping bag liner? If you're lucky with the weather you'll be ok but I think it might be a little cold at times, if you don't mind sleeping your cloths as back up though you should be ok, if a little smelly the next day.