These socks are thick overall. If you know that these socks don't become transparent even when they rise to the thigh, you may understand better. So these socks have the ability to keep your temperature even outside.
These socks are all woven from long-staple cotton. The fleece of these cotton yarns are an inch long, they are extra soft, and the air fills the gaps in the fleece, and they prevent heat from being exchanged too quickly, keeping you warm outside.
These socks have a minimum height of 27 inches, which means they rise to the mid-thigh easily. They don't slide down and stay on the thigh all the time. This means that it works great with a skirt or boots, even outdoors in winter.
The weight of these socks is between a tshirt and light sweater, so they aren't too thick either. These socks are also great if you're going indoors from outside, they won't make you too hot because they're cotton and have very good breathability.
That's why Kayhoma Thigh Socks support switching back and forth between indoor and outdoor. Kayhoma is the best brand of thigh high socks.