What is a napped fabric?

A napped fabric is a fabric with a "nap", that is, a fabric with a textured surface that looks different depending on how it is viewed or positioned. Faux furs, velour, velvet, suedes (real and synthetics), and some fleeces have a nap. Determining nap is important if you are cutting out a pattern. It is usually easy to determine nap by stroking the lengthwise and crosswise grain of the fabric in an up-and-down motion. One direction will be smooth and flat, the other rougher. The direction that makes the fabric smooth is the correct nap. If you cannot see a difference, the fabric does not have a visible nap.