With its NaturaLatch Slow Flow silicone nipple, the Premium Nurser eases baby's transition between breast and bottle. Its sleek, contoured shape is easy to hold. Features Less air, less gas for healthier feeding NaturaLatchTM Nipple clinically proven to support breastfeeding Collapsible liners mean less air and gas for healthier feeding Hourglass shape is easier to hold 2 Decorated 8-10 OZ Nursers with NaturaLatch Slow Flow Nipples GIRL COLORS