Quantity: 12 pieces(3 colors of bra strap holders and 3 colors of bra clips)Colors: beige, white and black, these three colors can match with most of your brasNon-slip bra holders: these bra strap holders can connect both of your bra shoulder straps from the back thus to keep them connected and prevent them from slipping offAdjustable elastic straps: these bra strap holders are adjustable, and they are stretchable, so you can adjust they length according to the distance between 2 shoulder strapsStrap holder sizes: elastic bra strap clips are approx. 18 cm in length and 1 cm in width, clips are approx. 1.6 cm in inner width, so it can suit bra straps within this widthWide applications: you can apply one or more bra strap holders according to your needs, suitable for doing sports, running, climbing, exercising and other strenuous exercises