I bought this set and the Riverstone brand at the same time. So although I'm comparing them against each other, I'm only reviewing the EarPro brand here.

The wire inside this set is not well structured. Depending on which side is up, they will fit tightly on the top side of my ears, and barely touch the sides of my head beneath my ear lobes. I expect that looseness will likely allow wind to whip into the gap. Then, if I flip them over, they are snug below my earlobes, but loose around the top of my ears and they feel like they are going to fall off.

Honestly, this EarPro brand MIGHT keep me warm while walking, but I doubt that it will stay on my head while skiing or snowboarding. They will certainly not stay on through a fall on a snowboard.

Overall, I recommend these if you are merely going to be walking on a sidewalk in low wind. If not, pay a little extra and get the RiverStone brand (they are the exact same size but feel like they will actually stay on my head).