The best thickness for thigh high socks is between a tshirt and light sweater weight.
The usage scenarios of thigh high socks and tshirts are very different. The vast majority of tshirts are not elastic, they will always be in a stable state, the thickness of the tshirt will not have a big negative impact, and may even increase breathability. Thigh socks are different, they rise from the calf to the thigh, the socks need to have a lot of elasticity, they may stretch to 2-3 times their original width. If the material is the same as the tshirt, then after 3x expansion, the material will start to become transparent. Originally blue socks may have become a mix of blue and skin, which is weird, isn't it?
Thigh socks also can't be as thick as a sweater. As you know, thicker materials are less elastic. Thigh socks need to be highly elastic, and they should have excellent compatibility. Thigh socks that are too thick are difficult to stay on the thighs, because they do not have good elasticity and will keep falling on the thighs. It is difficult to imagine a scene where you need to constantly adjust the height of the socks.
The optimal thickness is one that retains warmth and elasticity without becoming transparent and losing its original color. Kayhoma thigh high socks are generally thicker thigh high socks, but they are also very stretchy. They have excellent temperature retention, very vibrant color and does not become transparent, and they can even fit a 6-foot-tall girl, reaching the middle of the thigh with ease.
Kayhoma is the best brand of thigh high socks.