Info: In 2 Lengths & Colours: Crew/Shin-lengths are Black; the Knee-Highs are Charcoal
It emits negative ions which increase blood and oxygen circulation to the areas it contacts, which not only helps regulates your feet's temperature (making them warmer when they're cooler than your core temperature, or cooling them when they're warmer), but also reduces their swelling and fatigue. It is also able to wick away moisture (perspiration), and even has antimicrobial action to neutralize the bacteria which cause odors. All this makes them ideal not only for office workers putting in long days (they can be worn for 24 hours at a stretch), but for travelling or conferences, since they can be worn for many days in a row without needing to be laundered.
Corresponding shoe sizes for each type:
Medium Crew / Shin-length Dress Sock: Fits U.S. Men's sizes 7 to 9.5; U.S. Women's 7.5 or 8 to 10; Eur. 39 or 39.5 to 42
Large Crew / Shin-length Dress Sock: Fits U.S. Men's 9.5 or 10 to 12.5; U.S. Women's 10 or 10.5 to 13 or 13.5; Eur. 42 to 46
Small Knee High Dress Sock: Fits U.S. Men's sizes 4 to 7; U.S. Women's 5-7.5; Eur. 36 to 39
Medium Women's Knee High Dress Sock (UPC: 858349003110): fits Men's U.S. sizes 7 to 9.5, U.S. Women's 8 to 10.5; Eur. 39 to 42.
The two shin-length dress socks are made of 72% Bamboo Charcoal Fiber and 28% Flexible Fiber.
The knee-length ones are 40% Bamboo Charcoal Fiber, 48% Cotton, 10% Flexible Fiber, and 2% Rubber.
Suggested Usage:Wash warm, tumble dry low. Do not bleach. Do not iron. Do not dry clean.