Armor customization (Halo 3)/Back

From Halopedia, the Halo wiki

In-game Appearance Name Unlock Requirements Description
Default Default No backpack
Tactical Pack Season 6 All-purpose hardened storage.
Demolitions Pack Season 6 A one-stop shop for your front-line combat engineer.
Communications Pack Season 6 Battle network relay. Provides the user with a multi-channel secure network uplink. The case meets or exceeds all UNSC mil-spec standards for temperature, impact, moisture, vibration, and foreign particulate resistance.
Ammo Pack Season 6 Keep the party going with additional ammunition reserves and a back-up knife. In field situations packs such as these extend the duration of combat excursions and reduce the need for supply drops, but in training environments they have no effect.
Pulaski Season 6 Spartans serve as a fire break for many existential threats.
Sword and Board Season 6 Survive the onslaught.