It is a black and gold, lighter version of a full Iron Man suit, with a focus on speed and maneuverability. It was later destroyed either by the Extremis soldiers or the Clean Slate Protocol. It separated into several parts which flew independently, hitting several foes at once and then reassembling. The Bones armor was created after the Battle of New York by Tony Stark. Part of the Iron Legion, Bones was used in the Battle on the Norco, against Aldrich Killian and his Extremis soldiers. It was part of the Iron Legion and fought against the Extremis soldiers. The Mark XLI Armor (codenamed Bones) was Tony Stark's forty-first Iron Man suit and was designed to be a light weight suit that specialized in maneuverability. While Stark commonly evaded this predicament by leaving control of his intellectual property to Reed Richards, Reed had gone missing for a prolongued period of time when Stark became incapacitated."Gentlemen." ― J.A.R.V.I.S.
By this point, Tony had managed to upgrade the suit to give it limited weapons capability where the original was basically defenceless. The Stealth Armor was later used by Stark to infiltrate Soviet airspace during the first Armor Wars. It was used by Stark to infiltrate the Heaven's Hand fortress in the area formerly known as East Germany. Designed after Tony was detected approaching a Roxxon space station using the Space Armor, the Stealth Armor was created to focus on stealth over offensive weaponry.