What is a fabric with a raised surface?

A fabric with a raised surface is often referred to as "pile" fabric. This type of textile features loops or cut fibers that create a textured, plush feel, commonly seen in materials like velvet, terry cloth, and fleece. The raised fibers can enhance the fabric's warmth and softness, making it popular for clothing, upholstery, and blankets. The height and density of the pile can vary, affecting the fabric's appearance and tactile qualities.