I've been searching long and hard for a hands free pumping bra that would work with my AVENT ISIS DUO pump. I finally had success with this bra by fastening it quite tightly and leaving the petals off the horns of the pump. It is not perfect, but the best I could find. FINALLY freedom to multitask and be more comfortable as I pump. Color is nice, won't get dingy like white tends to do. Very versatile with sizing. Great investment for any working mom.