Product: Professional sports ski socks Thickness: thicker (thicker than ordinary ski socks) Material: cotton 60% + nylon 37% + 3% spandex Features: breathable, sweat-absorbing, warm Suitable age: adult Gender: General Function: Breathable, absorbent, shaping, anti-friction Season: Winter Process: Jacquard Package: 1*Pairs About size M: EU 35-39, foot length 20cm, tube height 35cm L: EU 40-45, foot length 23cm, tube height 40cm Regarding the error, all data is manually measured, there may be an error of 1-2cm, please understand Regarding chromatic aberration, due to light problems, there may be a little difference, we try to be consistent with the real thing.