Thank you for viewing. Pigeon Breastfeeding Realization SS size nipples, 3 pieces Nipples for baby bottles Sterilized by steam disinfection, The color is clear and they still look clean. These have been sterilized, but Please sterilize them again upon arrival for hygiene before use. These are used items, so Please refrain from purchasing if you are concerned. *When shipping, I plan to flatten them slightly to adjust the thickness.