Answer: spandex

AnswerCrossword Clue
SPANDEXOne of the new stretch fibers.
spandexa synthetic elastic fibre
spandexA type of stretchy polyurethane fabric
SPANDEXAthletic wear named for an anagram of what it does
SPANDEXSwimsuit material
SPANDEXWrestling singlet fabric
SPANDEXIt stretches at the gym
SPANDEXStretcher at the gym?
SPANDEXSomething to exercise in
SPANDEXGym wear
SPANDEXExerciser's wear
SPANDEXHip hugger?
SPANDEXPolyurethane fiber
SPANDEXFiber known as elastane in Europe
SPANDEXLycra, e.g.
SPANDEXMaterial for The Rock
SPANDEXStretcher at the gym
SPANDEXGym bunny's fabric
SPANDEXLeotard fiber
SPANDEXIt stretches during exercise
SPANDEXCyclist's wear
SPANDEXSinglet synthetic
SPANDEXShapewear fabric
SPANDEXStretchy fabric
SPANDEXStretchable fabric
SPANDEXLingerie synthetic