Designed to protect like the ancient Greek military formation, the Phalanx provides protection from abrasion and impact in a classic textile sport jacket. The Phalanx incorporates 600 denier water-resistant outer shell construction, SAS-TEC CE Certified armor in the elbows and shoulders, and ample use of NightViz reflective areas for increased visibility in low light situations. The combination of large zippered pit vents which allow air in, and large zippered exhaust vent in the back make this a great jacket for warmer temperatures. Zipping in the included EverHeat thermal vest allows this jacket to be used in cooler temperatures too. Large accordion stretch panels on the shoulders and elbows allow for great range of movement while the four adjustment tabs on the arms and two waist adjustment straps guarantee a great fit. Two external hand pockets as well as large internal cell phone / media pockets and headphone loops allow you to carry modern necessities. Defend yourself in the Phalanx.