Pigeon's Breastfeeding Realization S-size nipple, made of silicone, for baby bottles, usable from 1 month old. I only used one, so I'm offering one brand new one. - Brand: Pigeon - Model: Breastfeeding Realization S-size - Quantity: 1 - Target Age: From 1 month old - Type: Silicone Please note that the nipple will be flattened for shipping to make it slimmer.