These are the ones I have: http://www.beaversports.com/?page_id=576

In this review over here (http://wintercycletouring.com/2013/0...pogies-review/) he claims he didn't even need gloves down to -10. I wore them with some thinner gloves under them in the low 20s and my hands were way colder than when I wear a pair of heavier gloves with the thin ones as a liner.

Maybe if I cinch down the openings for my hands, there'd be less flow-through ventilation. But I have to keep taking at least my left hand out to signal turns and lane changes. Given where the reviewer was riding, it seems like that's not much of an issue.