Nipple measuring ruler: The nipple measuring tool allows mother to accurately find the right breast pump. Multiple Sizes: There are many different sizes on the Nipple ruler with clear fonts, which is convenient for new mother to use. Easy to Carry: Silicone nipple ruler measures 18cmx10cm/7.09inchx3.94inch,it can be rolled up. We also give a measuring ruler as a gift, which can be carried with you when you go out, which is very convenient. : Made of high quality silicone material, soft and odor free, can be rolled up, no deformation, durable. Fit: The Nipple measuring tool is a must for new mother to find the right pacifier for comfort for both mother and baby. Specification: Material : Silicone Size Chart: 18cmx10cm/7.09inchx3.94inch Package Includes: 1 Nipple Ruler 1 measuring ruler Note: 1.This is not infant toy, please take away from children to avoid eating. 2.Please allow slightly errors due to manual measurement and different monitors.