Basic Information
Faulds (also known as tassets) are the "skirts" of articulated plate that hang down from the front and sides of a breastplate or cuirass. For reference, the same structure on the back of a suit of armour is normally called a cullet1. A fauld is generally composed of connected lames of metal, giving a "lobstered" effect, although single plates are not unheard of (just a lot less convenient). In a full suit, faulds help protect the vulnerable joints at waist and groin, but these were also found in "half armour" where they were often the wearer's only leg and groin protection.
These were amongst the pieces that survived well into the munition plate era, usually depending from a cuirass as common armour for pikemen.