This bottler stopper is made of wood material, is safe, has no peculiar smell, and has good effect. The wood materials have strong thermal insulation properties. So, this is a good replacement bottle for water bottles, etc. You will love these good kitchen helpers. Features -Color:Multi -Material:Wood, metal -Size:4.50X4.50X3.50cm/1.77X1.77X1.38in (Large Size) -Size:4.00X3.50X3.50cm/1.57X1.38X1.38in (Small Size) -The simple appearance design of our this water bottle stopper its popularity and practicality, which is very attractive for home use. -When you need a Water Bottle Stopper, this product can be used quickly and is to provide service. -Made of good wood material, these bottle stoppers are sturdy and , can be used for a long time. -You can give this household kettle stopper as a gift to your friends or family members to meet your different needs when using it. -There are two different sizes of bottler stoppers that can meet your different size of bottles and kettles. Package list: 2 x kettle stoppers large size 2 x kettle stoppers small size