Queenleather is an outfit worn by Noa Rylie and the Three Queens in Metal Shadow Prelude. It is a full-body leather suit designed specifically for them. It is black with white striations; it looks almost like marble in its luster and texture. No special properties were displayed in the Prelude.
Noa's outfit was torn for undescribed reasons at the start of the story. She replaced it with an Agency-issued uniform. By the end of the volume the other women also had torn outfits, though they had nothing to replace theirs with.