Trail Sleeping Bags

Here's an easy way to find out, especially since it is nice and cold outside currently.

Simply sleep outside in your yard for a night, and check your minimum temperatures. Note that the berg will be substantially colder at 3000m ASL +, so if very nice and comfy in your garden, it might work in the Berg. I'd take a warm jacket along, just in case

Note that synthetic bags tend to lose their heating properties over time, so if these bags are old they will net be as warm as when they were new.

I use a Mr Price 0 degrees bag during summer. It is very light and packs up to 25% of the size of my Ice Breaker winter bag. The filling is artificial down, and not hollow fill. This bag is good and I have no need to change it.