This 4-hook Bra Extender was designed to extend your bra band when you need a little extra breathing room. Ideal: - if you are in-between bra sizes - for pregnancy and nursing, so you can keep using your beloved bras - if your weight fluctuates - before that time of the month, when your breasts change in size Save money. Be more comfortable! Machine wash, air dry. Great value! 2-color value pack of 6 to maximize your comfort and match multiple bras.