Short and sweet: A top quality product. It prevents effectively sweaty feet and foot odor. In the Bundeswehr and the sports (hiking) It's probably the best Schin Wahl.Ich have tried pretty much all producers and have to say here: the best. Also in the price performance ratio. Always a "shock" in the sock and tighten. Nothing more is needed. The result is even under high load a fresh and safe to wear the Schuhwerks.Man feels clean and you can unashamedly anytime times the feet out of the shoes can "harass" to no other.