Extend your bra back size by up to 4cm, suitable for most 3 hook bras. 48mm width hook and eye extender will fit most bra sizes; 10G, 12F-G, 14E-F, 16Dd-E, 18C-DD - Adds 3 rows of extra adjustment to your bra band - Machine wash in a wash bag Style #: 10059403 100% Polyester