Vertx VaporCore 5in Crew Sock - Mens Ranger Green Extra Large F1 RGN XLARGE. Designed for Vertx by the masters of merino Point6 the VaporCore Crew Sock is unmatched when it comes to odor control comfort and breathability. Coupled with VaporCore powered by 37.5 technology the naturally odor-resistant Merino wool knit fabrication provides highest performance temperature and moisture regulation. Bends in the wools fibers trap air to keep you warm when its cold and equally transport sweat away from the skin to keep you cool and dry in warmer environments. Built by experts for experts the VaporCore Crew Sock is a dependable addition to the Prepared Professionals kit. Specifications for Vertx Vaporcore Crew Sock - Men's: Manufacturer: Vertx Gender: Male Age Group: Adults Sock Height: Crew Footwear Type: Socks Fabric/Material: 62percent Wool/31percent Nylon/7percent Spandex Features of Vertx Vaporcore Crew Sock - Men's Merino wool knit naturally resists odors and regulates temperature and moisture Heel and toe reinforcement provides cushion and durability Knit mesh top-of-foot adds ventilation Compression fit does not sag or stretch over time VaporCore powered by 37.5 technology promotes active cooling and rapid drying Package Contents: Vertx Vaporcore Crew Sock - Men's Vertx F1 VTX9105 RGN XLARGE: VaporCore 5in Crew Sock - Mens Ranger Green Extra Large