Walnut succeeded oak as the favourite material for furniture, but hanging wardrobes in walnut appear to have been made very rarely, although clothes presses, with drawers and sliding trays, were frequent. During a large portion of the 18th century the tallboy was much used for storing clothes. A common feature was to base future size on the "eight small men" method. A considered good size double wardrobe would thus be able to hold within its capacity, eight small men. In the nineteenth century the wardrobe began to develop into its modern form, with a hanging cupboard at each side, a press in the upper part of the central portion and drawers below. As a rule it was often of mahogany, but as satinwood and other previously scarce, fine-grained, foreign woods began to be obtainable in considerable quantities, many elaborately and even magnificently inlaid wardrobes were made. Where Chippendale and his school had carved, Sheraton, Hepplewhite and their contemporaries achieved their effects by the artistic employment of deftly contrasted and highly polished woods. The next to last step in the evolution of the wardrobe was taken when the central doors, which had previously enclosed merely the upper part, were carried to the floor, covering the drawers as well as the sliding shelves, and were often fitted with mirrors. In the United Kingdom, a more affluent option is custom-fitted wardrobes, which are built around the size and shape of the room. Kas, kast or kasten (pronounced kaz) is a massive cupboard or wardrobe of Dutch origin similar to an armoire that was popular in the Netherlands and America in the 17th & 18th century. It was fitted with shelves and drawers used to store linen, clothing and other valuables and locked by key. They were status symbols and family heirlooms in the Low Countries and imported luxury goods to the American colonies. As such they were often made of quality wood such as cherry, rosewood and ebony and paneled, carved or painted.