These unisex socks feature a middle length construction and have two line details, as well as a tiger motif. They're 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.