Regular size is a little snug but still fits. Very warm and comfortable.
I love these leggings for outdoor activity in cold weather. The grey color is nice, and they're really warm. But they run a little small--I ordered my regular size and they are TIGHT. If I ordered again I'd get a size up.
I probably could have sized up one in these, they are a little tough to get on. But, once they are on they feel comfortable. I love the gray color- I'm picky about grays! So warm and soft on the inside- definitely need these for cold midwest runs.
Ordered my normal size and could not get them past my thighs and I have chicken legs. I loved how soft the lining was. I may need to size up and try them again.