Superfeet Guide series is built with the Guide, Outfitter, and serious Mountain Hunter in mind. Utilizing an EVOlyte Carbon Fiber blend stabilizer cap for weight-defying support, a thermo-regulating memory foam top sheet, and ScentLok technology to cut down on odor. Whether your a Guide putting 100+ days a year on your boots in the field, or a Sheep/Goat hunter who's routine revolves around a 100 + LB Pack, consider getting rid of those old factory insoles and upgrading to the Guide.