2.2 cm to 2.8 cm is the length of medium staple cotton.
The average length of a group of fibres that make up a cotton yarn is referred to as staple length. The longer fibres of extra long-staple cotton produce stronger and softer yarn, which results in fabrics that are both stronger and softer.
- Since a long fibre is required to make a very thin and strong yarn, most high thread-count sheets are made from extra-long staple cotton.
- In spinning cotton, staple length is important because shorter fibres are more challenging to spin and lead to more hairy yarns.