Fabric aesthetic character is defined as a relationship among a minimum of six concepts: style, body, cover, surface, texture, drape, and resilience. These concepts can be described by how they are subjectively perceived, by possible sub concepts by objective tests. It refers to the manipulation of several characteristics to achieve a wide range of unique styling fibers. These characteristics include denier (size of the fiber), luster (brightness of the fiber) and color (dyeability). Modifying these characteristics can make nylon look like a natural fiber or shine like a metal. Understanding these different characteristics can help a specifier choose the right carpet to meet the aesthetic needs of their commercial space. Denier is a direct numbering system that refers to the size of the fiber. The lower numbers represent the finer sizes while the higher numbers illustrate the coarser denier fibers. Using several denier fibers allows for more color variation in a yarn of a given size. Luster refers to the brightness or reflectivity of fibers, yarns, carpets or fabrics. Nylon is produced in various luster classifications including bright, semi-bright, and mid-dull. Brighter lusters can provide a metallic accent to carpet, while fibers with a more subdued luster imitate natural fibers. Using a combination of lusters can create apparent texture and add depth to carpet.