The only pacifier with flexing action that stimulates the motion of mother's nipple during breastfeeding. Baglet extends like mother's nipple during feeding; Soft, vented shield for better air circulation; Soft, flexible material designed to feel more like mom; Easy to clean - open design. Sized to Meet the Needs of Your Growing Baby: Size 1, 0-6 Months; Size 2, 6-18 Months.