When sourcing hoodies for B2B wholesale on Alibaba.com, fabric selection is one of the most critical decisions affecting buyer satisfaction, repeat orders, and brand reputation. The cotton vs polyester debate isn't just about preference—it's about measurable performance characteristics that directly impact end-user experience in different climates and use cases.
For Southeast Asian exporters selling on Alibaba.com, understanding these technical specifications is essential. Your buyers—from boutique brand owners in Europe to bulk distributors in North America—increasingly demand data-backed material specifications, not just marketing claims. This guide provides the technical foundation you need to communicate confidently with international buyers.
Cotton vs Polyester: Core Breathability Metrics Comparison
| Property | 100% Cotton | 100% Polyester | 60/40 Cotton-Poly Blend | 80/20 Cotton-Poly Blend |
|---|---|---|---|---|
| Moisture Absorption | Up to 25% of fiber weight | 0.4% of fiber weight | ~15% of fiber weight | ~20% of fiber weight |
| Drying Time | 45+ minutes | 12-18 minutes | 25-35 minutes | 35-40 minutes |
| OMMC Rating | < 0.3 (Poor) | 0.5-0.7 (Good) | 0.4-0.5 (Moderate) | 0.35-0.45 (Moderate) |
| Air Permeability | 400-600 mm/s | 700-1200 mm/s | 550-800 mm/s | 500-700 mm/s |
| Initial Cool Feel | Excellent (30 seconds) | Moderate | Good | Very Good |
| Long-term Thermal Control | Poor (traps heat) | Excellent | Good | Very Good |
The Overall Moisture Management Capacity (OMMC) rating deserves special attention. This industry-standard metric (measured via AATCC 195 testing) scores fabrics from 1 to 5 on their ability to handle sweat. High-performance polyester fabrics consistently achieve 0.5-0.7 OMMC ratings, while cotton typically scores below 0.3. For athletic and performance hoodies, this gap is decisive.
However, breathability isn't just about moisture transport. Air permeability (measured in mm/s under ASTM D737 standards) and Moisture Vapor Transmission Rate (MVTR) (measured in g/m²/24hr) provide complementary insights. Polyester's thermoplastic fiber structure creates more consistent air channels, while cotton's natural fiber variability leads to less predictable airflow patterns.

