Both the ‘Bay Street' and ‘Elk Parka’ are rated for -30C. I think it was derived from active use (not stationary)

Before publishing I had a brief email exchange with a “Sean M” who confirmed the Elk Jacket was 200g Primaloft Gold. (Bay Street may be different) which would make it less-warm than the CG jacket and less-warm than other, synthetics on my list.

I like their styles. I hope they make a jacket with plastic buttons and even more insulation.