Footwear are classified under headings 64.01 to 64.05. It is the constituent material of the outer sole and of the upper which determines classification of footwear in headings 64.01 to 64.05.
The term “outer sole” as used in headings 64.01 to 64.05 means that part of the footwear (other than an attached heel) which, when in use, is in contact with the ground. The constituent material of the outer sole for purposes of classification shall be taken to be the material having the greatest surface area in contact with the ground. In determining the constituent material of the outer sole, no account should be taken of attached accessories or reinforcements which partly cover the sole (see Note 4 (b) to this Chapter). These accessories or reinforcements include spikes, bars, nails, protectors or similar attachments (including a thin layer of textile flocking (e.g., for creating a design) or a detachable textile material, applied to but not embedded in the sole).
In the case of footwear made in a single piece (e.g., clogs) without applied soles, no separate outer sole is required; such footwear is classified with reference to the constituent material of its lower surface..
For the purposes of the classification of footwear in this Chapter, the constituent material of the uppers must also be taken into account. The upper is the part of the shoe or boot above the sole. However, in certain footwear with plastic moulded soles or in shoes of the American Indian moccasin type, a single piece of material is used to form the sole and either the whole or part of the upper, thus making it difficult to identify the demarcation between the outer sole and the upper. In such cases, the upper shall be considered to be that portion of the shoe which covers the sides and top of the foot. The size of the uppers varies very much between different types of footwear, from those covering the foot and the whole leg, including the thigh (for example, fishermen’s boots), to those which consist simply of straps or thongs (for example, sandals). .
If the upper consists of two or more materials, classification is determined by the constituent material which has the greatest external surface area, no account being taken of accessories or reinforcements such as ankle patches, protective or ornamental strips or edging, other ornamentation (e.g., tassels, pompons or braid), buckles, tabs, eyelet stays, laces or slide fasteners. The constituent material of any lining has no effect on classification.