These are really warm and comfortable. Thick, but not so thick my shoes are tight. Warm, but not so much that they make my feet sweat. Tight enough to stay up, but not so tight they get uncomfortable. They really are perfect. They come up to an inch or two of my knee (I'm 6'). I haven't gotten to wear them skiing yet (no snow yet this season) but I have worn them with my work boots working in the yard, and with my sneakers at work where I am inside, outside and on my feet for most of the day. I only got two pairs, but I look forward to the days where I get to wear them.