For merchants looking to sell on Alibaba.com with cotton t-shirts, understanding fabric specifications is not optional—it's the difference between winning bulk orders and losing buyers to competitors. Cotton fabric quality is determined by multiple interconnected factors: fiber length (staple), spinning process, fabric weight (GSM), and thread count. Each specification affects cost, performance, and buyer perception in distinct ways.
Fiber Length (Staple) is the starting point. Cotton fibers are classified into four categories based on length: long-staple (premium, used in luxury shirts), medium-staple (most common for t-shirts, balances cost and quality), short-staple (budget option, prone to pilling), and coarse-staple (lowest grade, rarely used for apparel) [4]. Long-staple cotton, including varieties like Egyptian and Pima, produces smoother, stronger yarns that resist pilling and maintain softness after repeated washes.
GSM (Grams per Square Meter) measures fabric weight and directly impacts perceived quality. For t-shirts, GSM ranges are categorized as: lightweight 130-190 GSM (ideal for summer, promotional tees, cost-sensitive markets), midweight 200-290 GSM (versatile, suitable for year-round wear, most popular for B2B wholesale), and heavyweight 300+ GSM (premium streetwear, durable, higher cost) [6]. The choice depends on target market, season, and brand positioning—not just 'higher is better.'
Thread Count (Yarn Count) indicates yarn fineness, expressed as Ne (English count) or S (singles). Lower numbers mean thicker yarn: 10S-20S for heavy casual wear, 30S-40S for standard quality t-shirts (sweet spot for B2B), 60S-80S for premium shirts, and 100S-120S for luxury dress shirts [7]. For cotton t-shirts targeting global wholesale buyers, 32S-40S combed ring-spun cotton offers the best balance of quality, durability, and cost-effectiveness.

