The fibres of this heading are manufactured as described in the General Explanatory Note to this Chapter.
Synthetic staple fibres are usually press-packed in bales. The fibres are generally of uniform length, which distinguishes them from the waste material of heading 55.05. The heading also covers synthetic filament tow of a length not exceeding 2 m provided that each filament measures less than 67 decitex. Synthetic filament tow of a length exceeding 2 m is excluded (heading 54.02 or 55.01). Synthetic staple fibres which have been carded, combed or otherwise processed for spinning are also excluded (heading 55.06).