Description: It is a soft, flexible and bend-resistant nipple ruler that allows you to use it with comfort and ease in choosing the proper breast pump. With clear dimension, precise scale and multiple hole positions, this nipple ruler measures nipple diameter with accuracy. This nipple ruler is constructed of silica gel material. The length is 18cm and width is 10cm. This nipple ruler is suitable for home use. Item Name: Nipple Ruler Material: Silica Gel Features: Clear Size, Precise Scale, Bending-resistance Size Details: L: 18cm/7.09", W: 10cm/3.94" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Nipple Ruler 1 x Flange Ruler