Features: High quality: Our nipple measuring tool is made of food-grade silicone, which comfortably fits your nipples and does not irritate the skin. Breastfeeding aid: The silicone nipple ruler helps new mothers choose the correct breast pump flange size to help prevent discomfort. Easy to use: While standing, place the ruler's hole over your nipple, select the correct size, or take a photo with the scale at the 0 edge or note the size using a mirror. Convenient for tracking: Helps you measure physical changes during different stages. Soft and elastic: The flexible silicone ruler is safe to use and gentle on the body. Notice: 1. Actual color may be slightly different from the image due to different lighting conditions. 2. Please allow 1-3 cm deviation due to manual measurement. Material: Silicone Size: 18 x 10 cm Package List: 1 x Silicone Nipple Measuring Ruler