Just attach the hooks on the underside of the extender to your bra hook loops,then use the hooks on your bra to attach to the hook loops on the front side of the extender.It can comfortably increase the band range of your bra. Features -Color:Multi -Material:Stainless Steel -Size:13.30X5.00X0.30cm/5.23X1.97X0.12in -Crafted from stainless steel, this product durability and longevity, making it a reliable addition to your wardrobe essentials. -The extended hook design ensures easy size adjustments, providing a comfortable fit for various body types. -Available in three versatile colors, this extender offers multiple options to match different fashion styles and preferences. -The back hook design not only secures the extender but also enhances the back line, giving attractive and streamlined appearance. -Featuring three rows of seven hooks, this extender allows for flexible adjustments, accommodating a wide range of sizing needs and preferences. list: 3 x Bra Extender