Women bra extender sizes(LW): 10x 7.6 cm, this bra extender has 3 rows of position hooks, 3 by 4 hooks enables you to adjust your bras easilyLadies bra extension material: the fabric part is made of elastic cotton and the metal hook part is made of stainless steel, the cotton fabric is soft and comcompatibletable to wearMultiple adaptation: this brassiere extenders have 3 colors, black, skin color and white, can match with your different colors bras, also you can choose the color according to your interests.Extra room compatible you: the extended bra strap can create some extra room compatible you, thus to make it comcompatibletable and easy when wearing your brasExtend bra lifetime: this brassiere back extension helps to adjust your new bra and old bra size in case of weight gaining, pregnancy and bra's shrinkage