The set includes 9 bra extenders with 3 hooks each, measuring 3.87*2.26 inches. Available in black, white, and beige to match most bras. Made from comfortable and breathable fabric, the extenders feature an elastic design that allows for flexible adjustment of the bra strap length, providing a comfortable fit. Simply attach the hooks of the bra extender to the back of the bra, then fasten the bra hooks to the extender's loops. The extenders have a hook spacing of 3/4 inch, suitable for most 3-hook bras. It is recommended to check the compatibility with your bras before purchasing. Suitable for women of all ages, these bra extenders are useful during pregnancy, breastfeeding, weight changes, or when bras shrink.