The ARDO Tulips Nipple Shields help support breastfeeding by making it easier for the baby to latch on, especially helpful for moms with flat or inverted nipples. The special tulip shape means that the baby experiences the smell of its mother close up. Nipple shields are also helpful in use for transitioning baby from bottle back to breast. Bulk pack is 100 pairs of nipple shields packaged in non-sterile poly bag.Note: Allow 2 weeks for shipping. Express shipping not available for this item.