These socks can be used by the police, military, hikers, fishermen, hunters, security specialists, practical shooters, athletes - everyone who use tactical, military, training or working footwear. "SHS" socks are designed in such a way that a large amount of sweat is absorbed by the sock, then it is equally distributed over the entire area and evaporates to the outside under the influence of internal pressure inside the footwear. Zones of maximum sweating and wear of "SHS" (Summer Hiking Sox) are reinforced with higly durable polyamide thread.The combination of natural cotton, nylon and elastane creates a balance between heat transfer properties and strength characteristics of the "SHS" socks. Summer field socks "SHS" (Summer Hiking sox) are designed by specialists of281Z Development Group*. All materials which are used in the production of "SHS" (Summer Hiking Sox) are NIR Compliant. MIL-Spec. Made in Ukraine! *281Z Development Group is a group of specialists in military gear that participated in the soldier's personal equipment enchancement program of Ukrainian Armed Forces from 2015 to 2016. For 2 years 281Z Development Group has been working with the popular Ukrainian military brand. All products, that were developed by 281Z are thoroughly tested in field conditions and have proven their quality in combat.IMPORTANT:Our socks are made of high quality materials that have high stretchability characteristics. Due to that socks may not feel tight when new,but after some time and couple of washings the sock will "remember" the shape of your foot and will fit perfectly. Please note that when you have boundary size (e.g. size 10) you can choose beetween sizes (e.g. beetween Small and Medium) depending on your preferences. The smaller size will provide more tight, snug fit, while the larger size will provide freer fit.