Elastane

a man-made fibre containing at least 85% polyurethane which is capable of high stretch followed by rapid and substantial recovery to its unstretched length. (See also elastomer; elastomeric yarn.)
Found on http://www.textilesintelligence.com/glo/index.cfm?SECTION=E

elastane

highly elastic artificial cotton-like fabric
Found on http://phrontistery.info/e.html
No exact match found