它有 1050 點的耐久度並且減少 95％ 受到的傷害。目前是遊戲中最堅固的護甲（強於暗影護甲的 90% 吸收能力）。
- Because of this armor's speed penalty, it is better suited for tanking damage rather than kiting an opponent. This makes it a great asset for Wolfgang and WX-78, who can both achieve higher than average health stats. Note that both characters also have potential speed bonuses (mighty and SYSTEM OVERLOAD states, respectively), so being in these states will offset the armor's penalty to speed.
- Due to the speed penalty, it isn't practical to wear this armor all the time. Players can switch to it when they want to tank in combat. Alternatively, a Walking Cane can be equipped along with the Marble Suit, negating most of the speed penalty. However, Walking Cane is not a decent weapon for most encounters. Experienced players can mostly overcome this problem by switching to a weapon before they attack, and switching back to Walking Cane before they dodge.
- 大理石護甲是在版本「The End Is Nigh」更新中加入遊戲的。
- Maxwell's quote, "That really isn't my style", could refer to both the unflattering appearance of the armour, and that Maxwell is very poorly suited to tanking due to his low max health.