Fashion in 15th-century Europe was characterized by a series of extremes and extravagances, from the voluminous robes called houppelandes with their sweeping floor-length sleeves to the revealing doublets and hose of Renaissance Italy. Hats, hoods, and other headdresses assumed increasing importance, and were draped, jewelled, and feathered. As Europe continued to grow more prosperous, the urban middle classes, skilled workers, began to wear more complex clothes that followed, at a distance, the fashions set by the elites. It is in this time period that we begin to see fashion take on a temporal aspect. People could now be dated by their clothes, and being in "out of date" clothing became a new social concern. National variations in clothing seem on the whole to have increased over the 15th century. General trends New trends emerge among the Danes The Lübeckian chronicler Arnold mocked changes in Danish attire he attributes to the increasing economic power of the Danes: Historians conjecture that the raw materials used to make clothing changed along with the styles, from wool to linens, as well as the colors of the textiles, and the types of weave, from homespun grey woolens to imported red and darkly colored textiles. Dominance of the Burgundian court With England and France mired in the Hundred Years War and its aftermath and then the English Wars of the Roses through most of the 15th century, European fashion north of the Alps was dominated by the glittering court of the Duchy of Burgundy, especially under the fashion-conscious power-broker Philip the Good (ruled 1419–1469). Having added Holland and Flanders to their dominion, the Dukes of Burgundy had access to the latest fabrics of Italy and the East and to English wool exports through the great trading cities of Bruges and Antwerp. Purchases of fabrics through Italian merchants like the two cousins both named Giovanni Arnolfini amounted to a noticeable proportion of all government expenditure. Especially in Florence, where sumptuary laws prevented the citizens from wearing the most luxurious cloths on which the city's fortunes were built, the materials of men's clothing in particular often appear plain in paintings, but contemporaries who understood the difference in grades of cloth very well would have appreciated the beauty and great expense of a very fine grade. Fabrics and fur Wool was the most popular fabric for all classes by far, followed by linen and hemp. Wool fabrics were available