Description Do you wanna a good performance and practical travel cup base cover? Do you want to have a lasting and multi-function heat insulation bottle boot cover? If you are, look no further. It will be your good choice. It is multipurpose, which can be used for many occasions, and has a good using experience. Features -Color:Assorted Color -Material:Silicone -Size:7.50X7.50X4.50cm/2.95X2.95X1.77in -Note: Suitable for any types of bottle which owns 30/40OZ capacity. - This water bottle boot is light, portable and necessity for your loved water bottle bottom . - Bottom silicone sleeve will greatly extend the service life of your water bottle and greatly reduce the metal collision sound. - The water bottle boot will keep your bottle bottom from scratch damage and against hot. - Bottom silicone sleeve is reusable, lasting and safe for everyday use with your tumblers. - The water bottle bottom cover is made of lasting silicone material, can serve you for a long time. This water bottle boot is light, portable and necessity for your loved water bottle bottom . Bottom silicone sleeve will greatly extend the service life of your water bottle and greatly reduce the metal collision sound. The water bottle boot will keep your bottle bottom from scratch damage and against hot. Bottom silicone sleeve is reusable, lasting and safe for everyday use with your tumblers. The water bottle bottom cover is made of lasting silicone material, can serve you for a long time.