splint armor AmE
splint armour BrE

The last description more closely fits splinted armor, which consists of long metal splints connected by mail/leather used for arm and leg protection.

And as they were issued their dwarf-forged steel breastplates and chain haubergeons they had been able to pass their scale and splint armor on to their allies.

And so the horse archers, men wearing leather rather than costly mail and splint armor, rode ahead of the lancers to try to drive Smerdis' infantry back from its sheltering barricade.

Leather vambraces were sometimes reinforced with longitudinal strips of hardened hide or metal creating splinted armour.

The couter was added to the hauberk to better protect the elbows, and splinted armour and the coat of plates provided increased protection for other areas.

New Zealand Jouster Peter Lyon wears a harness consisting of a coat-of-plates on his torso and metal splint armour on his limbs.

Splint armour, also referred to as splinted armour, first appears in a Scythian grave from the 4th century BCE.

Unlike scale armour which has plates on the outside or splint armour in which plates can be inside or outside, a coat of plates has the plates on the inside of the foundation garment.