Similac Infant Nipple & Ring Latex Free Ready to Use (1 Box with 250 Nipples and Rings) Review Posted: August 11, 2018 Under: Feeding By RockRedPanda no Comments Ready-for-use nipple and ring that match the infant’s sucking strength or need. Latex free. Latex free. 250 in case More Ready-for-use nipple and ring. Latex-free.