Features: Accurate measurement: The silicone nipple measuring ruler is designed specifically for breastfeeding and bottle feeding, making it easy and accurate to measure the size of breasts and nipples, helping you choose the most suitable feeding tool. Quality silicone: Food grade silicone, safe, soft and comfortable, not irritating to the skin, ensuring that it will not cause any harm to the breasts during use. Easy to use: The design is simple and comes with clear scale markings, making it easy for users to take measurements. The lightweight and portable characteristics is great for mother. Multi functional design: This measuring ruler can not only be used to measure breast size, but also effectively monitor the size of pacifiers, ensuring the selection of suitable bottles or pacifiers to meet the needs of babies and enhancing the feeding experience. Easy to clean: The silicone is heat-resistant and easy to clean. It can be placed in a dishwasher or disinfected with hot water to maintain hygiene and ensuring safe use every time. Specifications: Component: Silicone Parameters: Moderate softness, high temperature resistant Type: rectangular, circular, 2-piece set(optional) Color: pink, blue, purpled color(optional) Size rectangular: Approx. 10x18cm/3.93x7.09inch Size circular: Approx. 12cm/4.72inch Package Includes: 1 Piece or 1 Set Breast Pumps Nipple Flange Ruler(optional) note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.