Warning Text: Important: Plastic bottles and component parts become brittle when frozen and may break when dropped. Also, bottles and component parts may become damaged if mishandled, e.g. dropped, over-tightened, or knocked over. Take appropriate care in handling bottles and components. Do not use the breastmilk if bottles or components become damaged. Caution: If you experience discomfort while pumping, contact a breastfeeding specialist. You may need a larger size PersonalFit breastshield to reduce the possibility of nipple irritation or injury. Call 1-800-Tell You to locate a breastfeeding specialist in your area. Make sure breastfeeding is well established before introducing a nipple. Breastpumps are personal care items. For hygienic reasons they cannot be returned once opened.