Lycra
Lycra
Pronunciation: LY-kruh
A brand name for elastane/spandex fiber, providing exceptional stretch and recovery in lingerie and swimwear.
What Is Lycra?
Lycra is a registered trademark of The Lycra Company (formerly Invista) for their polyurethane-polyurea elastane fiber — the same type of fiber known generically as elastane (in Europe and India) or spandex (in the US). The fiber was originally developed by DuPont in 1958 and branded as Lycra in 1962. The name has become so widely recognized that many consumers use it interchangeably with spandex, similar to how "Jacuzzi" is used for any hot tub.
What distinguishes branded Lycra from generic elastane is primarily quality control and specialized variants. The Lycra Company produces targeted fiber types: Lycra Sport for activewear (enhanced recovery after repeated stretch cycles), Lycra Beauty for shapewear (higher compression with controlled stretch), Lycra FitSense for seamless construction, and Lycra Xtra Life for swimwear (up to 10 times more resistant to chlorine, sunscreen, and body oils). Fabric mills that use Lycra-branded fibers undergo certification programs to ensure proper knitting and finishing.
In lingerie, Lycra appears in virtually every garment type — bra bands, panty waistbands, bodysuits, shapewear, and swimwear. Typical blend ratios range from 5% (gentle comfort stretch) to 25% (firm compression). The fiber's core property is recovery: the ability to stretch up to 600% and return to its original length without permanent deformation. Care follows the same rules as all elastane: cold water washing, no tumble drying, no bleach, and no ironing on the fiber.
Sinderella uses quality stretch fibers in our lingerie to ensure that every piece fits like it was made for your body — and keeps fitting that way wear after wear.
How to Wear & Style
Lycra-blend lingerie adapts to your body, making it comfortable year-round. In hot weather, choose Lycra blended with cotton or modal for moisture absorption; in cooler months, Lycra-nylon blends feel sleek under layered clothing. For swimwear, look specifically for Lycra Xtra Life or chlorine-resistant formulations if you swim in pools regularly — standard Lycra degrades quickly with chlorine exposure. Rotate between at least two or three pieces rather than wearing the same bra or swimsuit daily; the fibers need a full day to recover their original tension. When the elastic feels loose even after a rest day, the piece has reached end-of-life.
Explore Stretch-Fit Lingerie
Pieces that move with your body and hold their shape wear after wear.
Explore All CollectionsFrequently Asked Questions
What is Lycra?
A brand name for elastane/spandex fiber, providing exceptional stretch and recovery in lingerie and swimwear.
Is Lycra better than generic elastane or spandex?
Lycra, elastane, and spandex are all the same type of fiber — a polyurethane-polyurea copolymer. Lycra is simply the brand name owned by The Lycra Company (formerly Invista, originally DuPont). In practice, branded Lycra fibers undergo stricter quality testing and often feature specialized variants like Lycra Sport (enhanced moisture management) or Lycra Beauty (higher compression for shapewear). Generic elastane from other manufacturers may perform identically or slightly less consistently. The brand name on a label is a reasonable indicator of quality control, but the percentage and blend matter more than the name.
How do I keep Lycra lingerie from losing its stretch?
Heat is the primary enemy of Lycra fibers. Always wash in cold or lukewarm water (below 30 degrees C), never use a tumble dryer, and avoid ironing directly on Lycra-blend fabric. Body oils and sunscreen also degrade the fibers over time, so rinse swimwear in fresh cold water immediately after each use. Alternate between multiple pieces rather than wearing the same one daily — Lycra needs 24-48 hours of rest to fully recover its stretch between wears.