Description The product is made of material, which is durable and lasting for use. The can install your own feeding bottle as a replacement nipple. Naturally shaped, soft, silicone nipples that are for breastfed babies. Features - Color: As shown. - Material: Silicone. - Size: About 5.1 x 5.1 x 4CM. - Naturally shaped, soft, silicone nipples that are for breastfed babies. - They do not contain any chemical composition, which means they are safe for your baby. - Safe in microwave, boiling water, dishwashers and sterilizers - Made of 100 percent safe hygienic silicone - Designed to eliminate confusion issues - Warm Tip: Dear buyer, due to lighting effect, monitor 39;s brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand Thank you