When sourcing cotton t-shirt fabric for B2B wholesale, understanding the technical specifications is crucial for making informed decisions. The two most critical attributes are fabric type and GSM (grams per square meter) weight. These specifications directly impact the final product's feel, durability, cost, and market positioning.
Cotton Fabric Types for T-Ships: The most common cotton fabric constructions for t-shirts include single jersey (150-180 GSM for basic tees), combed ring-spun cotton (180-220 GSM for premium quality), and organic cotton (certified by GOTS for eco-conscious markets). Each type serves different market segments and price points [1][2][5].
Quality Grade Indicators: Beyond GSM, several factors determine cotton fabric quality. Fiber length matters significantly—extra-long staple (ELS) cotton at 33mm+ produces smoother, stronger yarns. Yarn count (30s-40s for t-shirts) indicates fineness, with higher numbers meaning finer yarns. The spinning method is equally important: ring-spun cotton creates softer, more durable fabric compared to open-end (OE) spinning [3][5].
Cotton T-Shirt Fabric Specifications by Market Segment
| Market Segment | GSM Range | Fabric Type | Yarn Count | Typical MOQ | Price Positioning |
|---|---|---|---|---|---|
| Promotional/Bulk Events | 130-160 GSM | Single Jersey, OE Spun | 20s-30s | 500-1000 pcs | Budget |
| Standard Retail B2B | 180-220 GSM | Combed Ring-Spun Cotton | 30s-40s | 1000-3000 pcs | Mid-Range |
| Premium/Streetwear | 220-300 GSM | Combed Ring-Spun, Organic | 40s+ | 500-1500 pcs | Premium |
| Luxury/Designer | 300+ GSM | ELS Cotton, GOTS Certified | 50s+ | 300-1000 pcs | Luxury |
Certification Requirements: For exporters targeting EU and North American markets, certifications are no longer optional. OEKO-TEX Standard 100 ensures fabric is free from harmful substances, while GOTS (Global Organic Textile Standard) certifies organic fiber content and ethical production practices. Many Alibaba.com suppliers now display these certifications prominently, making verification easier for international buyers [1][3].

