Underwear Fabric Types and Characteristics
1. Natural Fibers
Cotton
- Properties: Breathable (air permeability 60-100 CFM), highly absorbent (8% moisture regain), hypoallergenic
- Best for: Everyday wear, sensitive skin
- Care: Machine wash warm; may shrink 3-5%
Bamboo
- Properties: 40% more absorbent than cotton, natural antibacterial (bacteria reduction >70%)
- Best for: Athletic underwear, eco-conscious consumers
2. Synthetic Fibers
Polyester
- Properties: Quick-drying (dries in 1/3 time of cotton), wrinkle-resistant
- Drawbacks: Poor moisture-wicking, can trap odors
Nylon
- Properties: Strongest fiber (abrasion resistance 40,000+ cycles), lightweight
- Common use: Performance underwear blends
3. Hybrid Fabrics
95% Cotton/5% Spandex
- Advantages: Combines cotton’s breathability with 20-30% stretch
- Ideal weight: 160-200 gsm for optimal comfort
Modal
- Properties: 50% more water-absorbent than cotton, ultra-soft hand feel
- Sustainability: Made from renewable beech trees
Microfiber
- Properties: Wicks moisture 3x faster than cotton, seamless construction
- Texture: Silk-like with 4-way stretch
4. Specialized Fabrics
Merino Wool
- Temperature regulation: Keeps warm at 0°C, cool at 30°C
- Natural feature: Odor-resistant without treatments
TENCEL™ Lyocell
- Eco-credentials: Closed-loop production (99% solvent recovery)
- Performance: 50% better moisture management than cotton
Selection Guide by Need
PriorityRecommended FabricWhyOdor ControlBamboo/Merino blendNatural antimicrobial propertiesMaximum StretchNylon-Spandex (15-20%)360° mobilityBudget-Friendly100% CottonLow cost, easy care
