Product Overview: The Medela PersonalFit Flex Breast Shield is designed to provide a comfortable and efficient pumping experience by adapting to different breast shapes. Key Features: ‣ 105° opening angle reduces breast pressure. ‣ Oval shape rotates 360° for a customized fit. ‣ Soft, flexible rim enhances comfort. Specifications: ‣ Material: BPA-free plastic. ‣ Size: 24mm.