For best results, and to avoid problems like air in bag, we recommend wearing Willow with a full-coverage nursing bra that’s stretchy and has a flap. When you have the right bra, Willow should not shift or move. The blue thumb pad on the flange should be against your breast and most of the Willow pump should be covered by the bra. Avoid underwire and padded bras.While there are lots of nursing bras that work with Willow, we’ve heard from Willow Pumpers that these styles from these companies – Bravado! Designs and iLoveSIA – work well.