Stonewashed stuff refers to items of clothing, usually DENIM, that have been treated with a special process to give them a unique look. This process involves washing the fabric with pumice stones, which gives it a faded, worn-in appearance. DENIM is the most common material used for stonewashed items, but other fabrics can also be treated in this way. Stonewashed items are popular for their vintage-inspired look and are often seen in fashion collections.