These socks aren't just socks. They're like slippers. They work beautifully around the house if thin socks aren't enough. But they're also great if you have a pair of boots that are just slightly too big. These can come in really any size. I just need to know the following: Shoe size (men's/women's/children's?) How wide around is the calf at its widest point? Length from bottom of heel to crook of knee. Do note that these can be slippery on uncarpeted surfaces.