SWAROVSKI ELEMENTS flatbacks are here! Also known as rhinestones, these components are perfect for adding sparkle to scrapbooks, flip-flops, clothing, greeting cards, cell phones and more! Be aware that flatbacks should never be dry cleaned. Please follow the cleaning instructions on your glue; many glues require that clothing be air dried. If you do machine dry always turn the article inside out before being placed in the dryer to avoid damage.