Took the Mesa up to Kite Lake , about 12,000 feet, two weekends ago. Very windy, very snowy. The tent did OK, but did not shed wind as well as a 4-season tent would, but it held up to some pretty intense gusts. My one complaint, but this would apply to any NoSeeUm mesh interior, was that the wind was able to drive the blowing snow up and over the rip-stop portion of the interior of the tent and into the tent through the mesh. I'm sure it saves weight, and adds to ventillation capabilities, but rip-stop would be my preference. I'm sure the tent will perform well in 3-Season conditions, but as it get's closer to winter here in Colorado, I'll plan on packing the Bilbler. Reliable Black Diamond quality. Hope it lasts as long as my NF Bullfrog did.