According to length fibers are classified into two types they are;
Staple
Filament
Staple Fibers: These fibres are either natural or manmade or short length fibers which measures in inches or fraction of inch e.g. ¾ to 18 inches. Expect silk all other natural fibers are staple fibers. Manmade fibers are made in filament form but cut into short staple lengths as well
Filament Fibers: Long fibers measured in yards or meters are known as filaments. Silk and all man made fibers are filaments.