These unisex socks feature an invisible construction that's designed with STANDARD 100 by OEKO-TEX®. Oeko-Tex labels and certificates appear that fiber-related "materials" and "products" do not contain harmful chemical substances. Meanwhile, Antibacterial agent used in this product is REACH (European Chemical Agency) registered and is made to improve the comfort by using a yarn with silver plus that shows about twice as antibacterial deodorant properties as ASICS functional standerd. This model is also available in four basic colorways. 

Size information:
Measurement of units in cm
S: 22cm
M: 25cm
L: 28cm