Mimijumi Baby Bottle, 8 Ounce. BPA latex free, nipple is made from medical and food grade silicone;New and Improved Nipple Design. Integrated venting to prevent colic. Skid free base and screw on nipple makes one handed bottle preparation easy. Dome shaped top makes the latching and drinking experience the closest to breastfeeding that a bottle can be. Replacement nipples are available in two different flow rates: slow and medium.