When Aulë created the Dwarves he had only a vague idea of what the Children of Ilúvatar should look like. Because of the threat of Morgoth over the world, Aulë made them very strong, both in body and character.
Dwarves were a short, stocky race, a little taller than hobbits but much broader and heavier. Most Dwarves had thick, luxuriant beards in which they took great pride, and often forked or braided them and tucked them into their belts.
They seem to have favoured simple durable clothing, coloured hoods and heavy cloaks for travelling, and belts of gold or silver. For battle their soldiers would have elaborately crafted armor and helmets, bearing various angles and styles that were trademarks of Dwarven crafting styles. Their armor was masked with symbols (after the manner of those used in forges for shielding the eyes) that were hideous to look upon.