When sourcing t-shirts for bulk export on Alibaba.com, fabric type is one of the most critical specifications that determines price, performance, and target market fit. The three primary fabric categories—100% Cotton, 100% Polyester, and Blended Fabrics (typically cotton-polyester mixes)—each serve distinct market segments with different buyer expectations.
Cotton remains the gold standard for comfort and breathability. Natural cellulose fibers allow air circulation and absorb moisture, making cotton t-shirts ideal for casual wear, premium fashion, and warm climate markets. However, cotton comes with higher raw material costs, susceptibility to shrinkage (3-5% after first wash), and longer drying times.
Polyester, a synthetic polymer fiber, offers superior durability, shape retention, and moisture-wicking properties. It absorbs only 0.4% of its weight in water compared to cotton's 8-10%, making it quick-drying and resistant to wrinkles [5]. Polyester dominates the sportswear, promotional merchandise, and budget-friendly bulk order segments.
Blended Fabrics combine cotton and polyester in various ratios—most commonly 60% cotton/40% polyester, 50/50, or 65/35. These blends aim to capture cotton's comfort while leveraging polyester's durability and cost efficiency. Blends represent a significant portion of mid-market B2B transactions, appealing to buyers seeking balanced performance without premium pricing.
- Lightweight (promotional): 140-160 GSM
- Standard retail: 160-180 GSM
- Premium quality: 180-220 GSM
- Heavyweight (workwear): 220+ GSM
Understanding these baseline specifications helps Southeast Asian sellers on Alibaba.com position their products correctly for different buyer segments. A promotional t-shirt buyer in the US may prioritize cost and printability (favoring polyester), while a boutique fashion buyer in Europe may demand 100% combed cotton with specific GSM requirements.

