A very nice helmet. Very comfortable, provides full head coverage, and seems to be quite warm. On a really cold day, I imagine you'd want to wear some type of face mask under the helmet. I haven't tested how the helmet fits with the extra bulk, however.
The fit of my goggles leaves a bit to be desired. I have yet to test it on a really warm day; I fear it could prove too hot. It's not heavy at all, but seems to be much beefier than the cheaper helmets, which feel like bike helmets.
I didn't really like my shorty. First off, I pretty much always had to use the ear flaps because although they could be tucked up, it was very uncomfortable. Plus the ear flap material felt very cheap. The chin strap was also very uncomfortable, and I ended up just using the webbing piece. It was one ugly beast too (my opinion) and made me look like i had a bowl on my head.
It did however protect my head from some nasty falls. I liked the strong shell and the solid foam. It felt pretty bombproof. I also liked the full coverage that it provides.
I have been most pleased with my Boeri Shorty Air helmet. It has saved me from numerous collisions with trees, obstacles in the terrain park, and rocks in the backcountry. It has kept my head as warm as I could ask, it vents for warm spring days, and the chin strap does not wear my face raw. I would highly recommend this helmet.