Atum AkKad wrote a review of Houdini Mix Full-Zip Top - Women's on February 3, 2014
Familiarity: I've used it once or twice and have initial impressions
Full Zip, as pictured on houdini sportswear website.
Note: Polartec Thermal Power Dry *203 g/sqm
& Recycled Econ Stretch * Weight: 250 g/sqm
I find this to be as warm as a patagonia r3 . I wore a Helly Hansen Warm Freeze Baselayer with this jacket in the zero degree range and I was perfectly comfortable.