My new helmet rules - I bought it specifically because it can be interchanged seasonally for summer or winter. The inside "hat" is removable, and although the helmet fits slightly larger without it, it's still comfortable. The hats rim is great for rainy weather, the ear flaps are super warm and comfy. It basically fills my need to wear a hat under my helmet without all the bulk. (and it's totally cute & unique) Thanks Bern!
I measured my head about 10 times to be sure to get the right fit, but the large was much too big. I returned it for a medium, which fits better but still seems a little too big.