When evaluating cotton mesh, prioritize the GSM (Grams per Square Meter), which typically ranges from 80g to 250g depending on the application. For apparel, a lower GSM ensures breathability, while industrial or bag-making mesh requires higher density. Additionally, verify the yarn count (e.g., 21s, 32s, or 40s); a higher yarn count indicates a finer, softer texture. Ensure the fabric has undergone combing processes to remove short fibers, which significantly reduces pilling and improves durability.