This wooden insulation bottle plug is safe and reliable, has no peculiar smell, and has good heat insulation effect. The materials have strong thermal insulation functions. Easy to use and can surely bring you better using feeling. Suitable for most bottles in the proper size, easy to replace. Features -Color:Multi -Material:Aluminum, wood. -Size:4.00X3.00X3.00cm/1.57X1.18X1.18in. -Note:Suitable for bottle diameter of about 3.50cm/1.38inch. these insulation bottle stoppers are made from wood and aluminum materials, for lasting use. -This insulation bottle stoppers have a smooth surface and is easy to clean and can be your nice helper. -The ergonomic design is very convenient to use, increase friction, no burrs, for you to have good touching feeling. -Small and practical, light and , easy to install and use, can fit your demands better. -Simple appearance, but it is very practical for use. Suitable as a hot kettle replacement accessory. Package list: 20 x Insulation Bottle Stoppers