LeeL: Which silk are you using? Does the manufacturer make any claims to the added warmth?
Hiker Boy: Thanks for the suggestions! I will check online.
Jeffweichel: I agree with your statement about the LifeVenture. I asked because it is on sale for $25. When you used the bivy did you not soak up your own sweat?
The reason for asking about silk or cotton liner like the S2S Reactor is because I have a Gortex bivy. In cold weather I hope to use the liner inside my Spring bag. In warm weather just the liner.
I am starting to think cotton like the S2S Reactor is what I may be aiming for.
Other suggestions and recommendations are welcomed!!!