Linked from
The 10 pages that link to Spandex, each with the reason it gives.
SwimsuitBroader topic: Its elasticity helps swimsuits retain a close fit during swimming.
One-piece swimsuitRelated: Its stretch lets a close-fitting suit move with the body.
PantiesRelated: Small amounts help panties fit closely without restricting movement.
Swim briefsRelated: Elastane lets briefs stretch around the body and recover their shape.
PantyhoseRelated: Its stretch lets pantyhose conform closely to legs and recover their shape.
Tube topRelated: Blending spandex into the fabric helps a tube top stretch and recover.