In short I'm off to the Himalayas at the end of July where I'm cycling the Manali Leh highway. We'll mostly be camping and I'm told that the temperature will drop to just below freezing at night.
Rather then buy an expensive sleeping bag I’m planning to have a liner made for my cheap synthetic two season bag (EuroHike 250 I think). Essentially it will be a cotton liner that is fully lined with a silk/ cashmere mix material (two big pashminas!).
Any ideas whether this will be warm enough – I can get quite cold at night? I can always sleep in my clothes on for the really cold nights - down jacket, long johns etc.