Winter commuting helmet
 

I posted this helmet in the winter riding section but I don't know how many people look in there so I thought I would share it with you in the regular commuting section. I just found this helmet and I think it's the bee's knees. It should keep your face warmer and it is designed to be lightweight so it should work for cycling too.

http://www.ruroc.com/info/1/about-ruroc/

http://www.youtube.com/watch?v=JJpupIz41HY

Looks cool (reminds of bounty hunters helmets from Star Wars, which is a plus!), but way too expensive IMHO. A helmet with few vents and a nice balaclava work for most.

indi: do you have this helmet?

I generate way too much heat to wear a snow sports helmet. I don't mind my head being super sweaty when I am hitting the slopes and shredding some moguls, but I really don't need another source of sweat to make me stinky during my commute to work.

The helmet in the OP's post is cool looking but I don't know if it's what I'd choose for commuting. As Adam said, my regular helmet with a balcava and my hoodie (its a runner's pullover that has a hood just large enough to pull up over my helmet to block most of the vents) does just fine to about -10 degrees F. If I was going to ride much colder, I'd get a regular ski helmet and goggles.

Skiing and cycling involve similar speeds and hazards. Ski helmets are similar in design to cycling helmets with fewer, smaller vents and insulation (some have ear flaps). An added advantage is that they have clips to help keep goggles in place. This time of year you can find them at big discounts.

Or you can get a cheap full face motorcycle helmet. :D

Looks a bit overkill.
I bought a Bern for the winter commute this year and haven't worn it much - though our non-winter this year has contributed to that!
As others said, a good hat or bala under a normal helmet, with a hood (or even a rain cover) on extra cold days will suffice. Some people tape over the vent holes for very cold conditions.
I also find the dial-adjuster in my helmet is great for easily switching from no-hat size to with-hat size.

Not so much. In fact it's all too much. Too much coverage, too much insulation, too much money.

I wear a ski helmet when it's under 15F only. You need your face open even if your skin is covered with lycra or neoprene for ventilation to keep your eyewear from fogging. Plus ski helmets especially off season or last years models can be found cheap.

Looks way too hot to me. I just do the balaclava under my helmet and that gets me most of the facial coverage I need (or if I don't need it, I pull it down to my chin. If it's really cold, I'll throw ski goggles on instead of my glasses and/or put on my raincover on my helmet, but those are when it's colder than I usually like being out kinds of days.

No I don't have this helmet but I'm thinking of buying it. I don't think I would be riding hard enough to make myself sweat if its cold and snowy. I ride at a leasurely pace and I will get there when I get there attitude. I want a setup that I can slap on and off quickly. I have snowmobiled a lot in my life and I know how to stay warm in the really cold weather. Motorcycle helmets are just too darn heavy for my taste. I like the looks of this one though. If you don't like the full face.....you can always make it a normal helmet by removing the lower shield and goggles. I don't know........you make good points on it being very expensive though.

Regular helmet and helmet cover for winter/rain.

Bern offers a few bike/ski helmets with a winter liner set optional..

+1 My helmet covers are used according to temp. I've got 2. One's for cold/dry weather and the other's for wet/rainy conditions whether warm or cold. I use a balaclava under my long-sleeved poly-pro hoodies. If it gets really cold I've got a face covering heavy weight balaclava and ski goggles. It's been a pretty mild winter here this year, so I haven't had to use that combo.