Specially made of PP material. Do not contain BPA(Bisphenol A). Breast pump is used to extract milk from the breasts of a lactating woman who cannot milk through the natural ways and/or relieve breast engorgement. It enables milking after delivery by activating the milk glands. Manual breast pumps do not allow the formation of problems such as mastitis. It’s ergonomic design is suitable for each type of breast and may be used by a single hand.