Biomechanical Full Plate was invented by the Society of Biomechanics. Made of black silver, it is infused with an organic liquid that enhances the wearer's mobility. The enhanced mobility property of this armor confers +2 movement, +4' to jump checks, and +2 Athletic skill checks.
The method of creating the liquid for this armor is a closely guarded secret. It is known to require that it be done at extreme pressure; something that the Society of Biomechanics and the Nordern cities can achieve if they dive deep into the oceans.