Manufacturer: Mothers Milk/spectra Baby Usa The Mothers Milk Replacement Premium Breast Shield with Valve, (28 mm) is designed to provide comfort and efficiency for mothers who express breast milk. This replacement shield is an essential accessory for enhancing the pumping experience. Features: -Tailored for larger breast sizes, the 28 mm shield offers a comfortable fit, accommodating various breast shapes and sizes. In addition, it is made from high quality, BPA-free materials. Ensuring safety for both mother and baby. -The built-in valve prevents backflow, ensuring that expressed milk flows directly into the collection container without contamination, keeping the milk safe and hygienic. -The breast shield is compatible with most standard breast pumps. Making it easy to replace without needing to purchase a new pump. -The shield can be disassembled easily for thorough cleaning, maintaining hygiene and ensuring that its safe for daily use.