Come and Check Our Branding Solutions.Top quality, durable silicone material with cute yellow duck design. FDA & BPA free, non-toxic and odorless. With 2 size flexible ribbed openings, small diameter: 4 cm and large diameter: 6 cm. Easy to get a firm grip and apply on various kinds of screw-top style bottle, can and other jars in different diameters. It does not occupy too much kitchen space and very convenient to store. Pls check inventory and detailed info before placing your orders.