Under Armour started out as a company that created “Cold Gear” to help keep you warm in cold environments, then eventually expanded into heat gear with fabric that wicked sweat away and kept you cool and dry. Now all of the manufacturers are creating similar products and imitating UA.
Under Armour’s Base 4.0 Cold Gear leggings are excellent for hunter’s in frigid conditions. The 4.0 model is for when you will be sitting still for an extended period of time and not moving much. Like when you are in your tree stand or ground blind.