joovy boob pp baby bottle, turquoise, 5 ounce, 2 count joovy the joovy boob baby bottle offers state of the art features that make feeding easier and more convenient. the unique one-piece cleanflow vent provides consistent venting regardless of how the bottle is held.silicone nipples are molded (not cut) with the appropriate size hole and tested for consistency5 oz. bottle includes a stage 1 nipple (slow; 0 months)made from durable polypropylene plastic, each bottle is individually shrink-wrapped to deliver the highest level of cleanlinessbottle does not require assembly and there is no need to touch any part that comes in contact with the milk or formulavent's tabs fit perfectly into the bottle's neck, ensuring a proper fit and eliminating leaks or inconsistent liquid flow