Bought for wedding and didn’t wear. Did try them on with a black dress so they do have a bit of black fuzz on them, but they have not been worn out. From Boomba’s site. This padded insert is specially designed for demi cup styles. Stick it inside wedding dresses, bras, bandeau bikinis, etc. for a natural-looking boost. Natural-looking boost designed for demi cup style clothing Boosts up to 2 cup sizes Prevents nipple slips in low cut tops Insert stays put and keeps clothing in place Interchangeable between outfits, no sewing required Our inserts are not intended for individuals who have sensitive or thin skin or women who are pregnant or breastfeeding Unlike a sticky bra that is supported by the adhesive, BOOMBA inserts are supported by the clothing, they cannot stay up by themselves. It is crucial to wear them in tight, structured, and fitted tops. For the perfect fit, we recommend choosing your true size. Only size down if you are in between sizes.