Pigeon Slim Type Nipple, M size, suitable for 4 months and up. - Brand: Pigeon - Type: Slim Type - Size: M - Target Age: 4 months and up - Usage: Round hole - Package: FSC mark - Product Code: 1031592 Thank you for viewing. I purchased a set of two, but I only used one and the time to use the other has passed, so I stored the remaining one at home in its box. It is covered in plastic, so I haven't touched the contents directly, and I think it's clean.