For optimal sublimation results, the fabric must have a high polyester content (at least 80%, preferably 100%) to ensure the dye bonds effectively with the fibers. Common materials include polyester satin, chiffon, or 'silk-feel' polyester. The fabric weight, typically measured in GSM (Grams per Square Meter), should be selected based on the season: 60-90 GSM for lightweight summer scarves and 120-180 GSM for thicker winter versions. Ensure the fabric is pre-shrunk to prevent distortion during the high-heat sublimation process.