under armour base 2.0 high-activity performance in cool conditions base 3.0 extremely versatile for midweight warmth and mobility in a variety of activity levels and temperatures base 4.0 the warmest base layers ua makes lock in body heat to deliver extreme warmth in extreme cold ladies' men's base 2.0 base 4.0 base 2.0 base 3.0 base 4.0 base 2.0 series crew shirt or leggings base 4.0 series extreme half-zip pullover or leggings • moisture-wicking.ua scent-control base 2.0 series crew shirt or leggings ua scent-control technology • working fly base 3.0 series crew shirt or leggings • moisture-wicking .ua scent-control base 4.0 series quarter-zip pullover or leggings • moisture-wicking.ua scent-control under armour men's or ladies' under armour men's valsetz rts 1.5 tactical boots • breathable mesh uppers • eva footbed with arch support • micro g® cushioned midsole • protective tpu toe caps • ua clutchfit ankle-support system for sure fit • ultralight micro g® eva foam midsoles • 100% waterproof membrane