Features: Ensure optimal performance of your breast pump with our full set of replacement parts, compatible with S32/S39 models, featuring 24mm and 27mm flanges for efficient milk collection. Crafted from high-quality silicone, soft, durable, and easy to disassemble and clean, ensuring a safe and hygienic pumping experience. Designed specifically for breastfeeding mothers using wearable electric breast pumps, providing reliable support throughout the nursing journey. Ideal for use at home, in the office, or while traveling, offering convenient and efficient support for breastfeeding mothers. Enhance your breastfeeding routine with these essential pump accessories, ensuring you have all necessary components for seamless and effective milk expression. Specifications: Material: Silicone Type: 24mm, 27mm (optional) Membrane Size: approx. 4.6x4cm / 1.81x1.57inch Duckbill Valves Size: approx. 1.1x2.6cm / 0.43x1.02inch Applicable Model: for S32/S39 wearable electric breast pump Package Includes: 1 Piece Breast Milk Collector 1 Piece Membrane 1 Piece Duckbill Valve (1pc, not multiple) 1 Piece Flange (24mm/27mm optional) Note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolutions.