These are DOT approved, as well as mine came with two separate visor-windows. A single-pane for summer riding as well as a 'dual-pane' for winter use.That's an interesting helmet
Is it approved for the streets or just snow?
In the summer of '05 I wore it to Princeton MN, Sturgis SD, and all through Western Canada. Is it warmer than a 'skull cap' yes, but is it like wearing a skidoo suit in summer, no. As stated, the air vents worked well for me. Add to that the hail-storms that came out of no-where helped me out. And when it rains, well,,,, there's nothing better than a full-face for when it's raining.