Warmest <5 oz Camp Layer
I have always taken a light down to wear when in camp and to supplement a bag that is on the light side. Looking for layer that I can use for very limited time in camp and then wear while sleeping. Could also be used as an active layer as a last resort but not its intended purpose as I will have a wind shirt if required for cold starts for summer Sierra conditions. Any advice on a different approach would be appreciated as well. Thanks.