Silicone nipples for baby bottles that babies can naturally drink from, size S, pack of 2. - Brand: Pigeon - Size: S - Quantity: Pack of 2 - Target age: From 1 month old - Material: Silicone rubber - Nipple hole size: Round hole Thank you for viewing. I purchased these without considering the nipple size because it had been a while since my last childbirth. They ended up being a waste. I opened one of the two boxes and tried to attach one to a bottle, so I touched one. However, they are actually unused. If you are okay with this, I would appreciate it if you would buy them. Thank you.