Features: Breast Pump Flange Measuring Tool for Nipple: This breast pump nipple measuring tool helps measure the nipple diameter to find the proper size pump flange that works effectively with your breastfeeding pump, helping to address common breastfeeding challenges. Wide Range of Sizes: The nipple measuring card includes 21 size circles to accommodate various diameter requirements, providing flexibility as nipple size may change. High-Quality Material: Made from food-grade silicone, this flange measuring tool is skin-friendly, features accurate scaling, and is safe for sensitive skin. Supports Breast Milk Production: By helping you determine the correct nipple diameter and appropriate flange size, this tool promotes better breast milk flow and output when using the right fit. Easy to Use: Simply hold the ruler against the edge of your nipple, use a mirror to read the corresponding size, and ensure a comfortable fit without forcing for accurate measurement. Specifications: Product Dimensions: As shown in pictures Material: Silicone Color Options: Green, Pink, Purple, Light Green, Sky Blue, Light Brown, Green (with soft ruler), Pink (with soft ruler), Purple (with soft ruler), Light Green (with soft ruler), Sky Blue (with soft ruler), Light Brown (with soft ruler) Package Includes: 1 x Silicone Nipple Ruler Note: Please allow 1–2 cm variation due to manual measurement. Due to differences in monitor displays, the actual color may vary slightly from the image.