Spaulders are pieces of armour in a harness of plate armour. Typically, they are a single plate of steel or iron covering the shoulder with bands (lames) joined by straps of leather or rivets. By the 1450s, however, they were often attached to the upper cannon or rerebrace, a feature that continued into the 16th century.^[1]

According to some pictorial evidence of the early Middle Ages, such as the Barberini Ivory, Roman officers wore single spaulders with pteruges attached to protect their upper arms and shoulders.

The use of spaulders developed in the West during the 14th century, appearing more often in the 1300s.^[1] Unlike pauldrons, spaulders do not cover the armpits.^{[citation needed]} Instead, the gaps may be covered by besagews or simply left bare, exposing the mail beneath.

Though the use of spaulders has declined, craftsmen and machine shops still exist which can craft a pair of spaulders for use in a museum or in simulated combat during reenactments.

Additionally, the Iraq War saw the introduction of a modern-day version of the spaulder, in the form of the "Deltoid Axillary Protector" add-on to the Interceptor body armour worn by US soldiers.

• Arador Armour Library guide to creating replica spaulders

v t e Components of medieval European armour
Head	Armet Barbute Bascinet Burgonet Cervelliere Enclosed helmet Close helmet Great helm Frog mouth Hounskull Lobster tail pot Mail coif Morion Nasal helmet Sallet Spangenhelm Kettle hat
Face	Visor Falling buffe
Neck	Aventail Bevor Gorget Pizaine
Torso	Breastplate Brigandine Cuirass Culet Pauncer Plackart Fauld Hauberk Codpiece Lance rest Coat of plates Jack of plate
Arms	Ailette Besagew Couter Gauntlet Pauldron Rerebrace Spaulder Vambrace
Legs	Bases Chausses Cuisses Greave Poleyn Sabaton Schynbald Tasset
Pieces	Gousset Lame Rondel Arming points