Staple length measures the length of individual cotton fibres - the fundamental quality factor for cotton textiles.
Categories
| Category | Length | Quality |
|---|---|---|
| Short staple | Under 1" (25mm) | Basic |
| Medium staple | 1-1.125" (25-28mm) | Standard |
| Long staple (LS) | 1.125-1.25" (28-32mm) | Good |
| Extra-long staple (ELS) | Over 1.25" (32mm+) | Premium |
Why It Matters
Longer fibres produce better yarn because:
Fewer joins: Long fibres span more distance, requiring fewer fibres per length of yarn.
Smoother surface: Fewer fibre ends poking out.
Greater strength: Long fibres grip each other better.
Less pilling: Short fibres cause pills; long fibres stay anchored.
Premium Varieties by Staple
- Egyptian cotton: 1.5"+ (extra-long)
- Pima/Supima: 1.4"+ (extra-long)
- Turkish cotton: 1.25"+ (long)
- Upland cotton: Under 1.125" (short-medium)
Testing
Staple length is measured using standardised methods (HVI testing) during cotton grading. Consumers can't measure it themselves but can rely on variety names as indicators.
Related Terms
- Long-staple cotton - Premium category
- Upland cotton - Short staple
- Egyptian cotton - ELS variety