Once you try Mimijumi's breastfeeding bottle, your nursing baby won't accept anything else. That's because these nipples look and feel more like the real deal, from their angled nipple to their texture, shape, and color. These replacement nipples fit Mimijumi's 4 oz. and 8 oz. baby bottles (sold separately). Choose Slow Flow (for newborns-3 months) or Medium Flow (for ages 3 months and up). Top-rack dishwasher safe.For more information, click here.