Bra Extenders Clasp Strap (3PCS) Quick and simple solution for an extra room during weight fluctuations, in-between sizes and pregnancy. These Bra Extender provides a little extra slack to your bra underband. Eliminate the need to buy a whole new set of lingerie when you temporarily need a little extra room. More, you could DIY your favourite bra into a backless bra to fit your fabulous party dresses. Simply hook on to your bra to extend the back for additional comfort.