EVA-class Mjolnir
From Halopedia, the Halo wiki
File:CQB.jpg
CQB Armor.
EVA Armor[1], officially known as Extra Vehicular Activity Armor, is a type of United Nations Space Command ground infantry body armor.
Not much is known about the armor except it will be an armor variant in Halo 3 multiplayer. However, it is generally believed that EVA Armor will sport stronger shields than the standard MJOLNIR Armor.
