Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. organic material
7. elastomer
8. [elastomer by composition or origin]

Anotations

Scope note:

Synthetic elastomeric fiber or fabric composed largely of alternating rigid and flexible segments of polyurethane. It is used in the clothing industry, especially for hosiery, underwear, swimwear, and other close-fitting garments. Spandex is the generic name in the United States and Canada. Elastane is the generic name used elsewhere. Lycra is a proprietary name for this material.