Nuby Soft Flex™ Silicone Nurser™ - 5oz - 1pkThe SoftFlex Silicone Bottle features a revolutionary new soft air silicone base. Made from 100% BPA free silicone, the soft silicone base allows the parent to assist with feeding by giving the bottle a gentle squeeze. This unique bottle also features anti-colic vents, and Nuby"s Natural Touch breast sized nipple.