My circa ten year old Cumulus Lite Line is (over) due a trip to the launderette.
I'm wondering, since it sometimes gets used in bivvy bags or small one man tents, whether it's worth running it through a cycle of Nikwax Downproof after washing with a view to improving its condensation resistance. I'm planning a multi day trip in the spring in potentially wet conditions. I'm not particularly keen to buy - or carry - a synthetic bag, but I'm a bit concerned about my down bag getting damp if I don't have chances to dry it properly.
Any experiences of using Downproof on bags? Is it likely to help? Or harm?
