Description Features For use with Spectra 9Plus, Spectra M1, Spectra S1 or Spectra S2 Breast Pumps Breast shield available in sizes 28 mm / 24 mm / 20 mm BPA/DEHP Free Overview | The Product The Spectra Premium Accessory Kit offers a complete set of essential components for your pumping needs. Compatible with Spectra 9Plus, M1, S1, and S2 breast pumps, this comprehensive kit is available in two breast shield sizes to ensure proper fit and comfort. Each kit includes a breast shield, backflow protector, duckbill valve, tubing, and bottle - all manufactured from BPA/DEHP-free materials for your peace of mind. This thoughtfully designed accessory kit provides everything needed to maintain optimal pumping performance while prioritizing both mother and baby's safety. | Affordability Dansons Medical believes that everyone, especially those struggling with illness, injury, or aging, deserves affordability. We aim to do this through a couple of ways: We provide free shipping on every product we have so that the price you see is the price you pay. We offer a low-price match guarantee. If you can find a lower price than us, contact us with a link and if allowed by the manufacturer, we will match it. We understand affordability means customer service done right. We aim to be as communicative as possible and incur as little problems as possible. Inclusions Inclusions of the Spectra Premium Accessory Kit Description Quantity Breast Shield (Size options: 20mm, 24mm, & 28mm) 1 piece Back Flow Protector 1 piece Duckbill Valve 1 piece 5 oz. Spectra Wide Neck Milk Bottle with nipple, disc, cap, and cover 1 piece Tubing 1 piece Tubing Adapter - for SG models only 1 piece