Cimilre breast shields sold as spare parts to support pumping. Four sizes are available: 21mm, 24mm, 28mm, and 32mm. Each size is sold as a set of two. Made from BPA-, BPS-, and phthalate-free materials. Valves are not included. Recommended to ensure a good breast shield fit and to maximize pumping efficiency. Key Features Four sizes available 21mm 24mm 28mm 32mm Each size sold as a set of two breast shields Made with BPA-, BPS-, and phthalate-free materials Designed to help maximize pumping efficiency Recommended when pumping causes discomfort Valves are not included with these shields Details Brand: Cimilre Breast Pumps Product type: Nipple Shields Sizes: 21mm, 24mm, 28mm, 32mm Count: Two (2) breast shields per set Materials: BPA-, BPS-, and phthalate-free materials Note: Valves are not included Who It Is For For parents who need spare breast shields and want to maintain a good pump fit. Recommended when pumping causes discomfort and to help maximize pumping efficiency. Frequently Asked Questions What sizes are available for these breast shields?Four sizes are available: 21mm, 24mm, 28mm, and 32mm. How many breast shields come in each set?Each size comes in a set of two breast shields. Are valves included with the breast shields?Valves are not included. What materials are the breast shields made from?They are made with BPA-, BPS-, and phthalate-free materials. Why should I use spare breast shields?Spare breast shields help ensure a good fit and can maximize pumping efficiency, especially if pumping causes discomfort.