Spandex (noun)

A synthetic fabric or fiber that is stretchable and resilient, often used in sportswear and undergarments.

Origin:

From a blend of the words "expand" and "elastic".

Examples:

1. The leggings were made of spandex, so they hugged her legs perfectly.
2. The new swimsuits are made of spandex and nylon, which makes them stretchy and comfortable.
3. The spandex material in the shirt allows for a tight fit without restricting movement.
4. She was wearing a spandex bodysuit for her gymnastics routine.
5. The spandex in the yoga pants made it easier to move and stretch.