1, Soft silicone, non-toxic, good preservation, do not harm the hand.2, Sealing design, novel and unique.3, A set of 6 colors, rich colors, easy to use.4, Designed to help keep beer fresh and safe.5, Suitable for glass bottles, such as beer bottles, beverage bottles,glass bottles, soy sauce, vinegar bottle feeding bottle; extensive usage.6, Fits most standard beer bottles and some larger stylesMaterial: SiliconeColor:As shownSize:As shownPackage included:6 pcs Silicone Bottle CapNote:1.Due to the different monitor and light effect, the actual color of the item might be slightly different from the color which is showed on the pictures.2.Please forgive 1 cm/0.39"-3 cm/1.18" measuring deviation due to manual measurement.