This is a silicone bottom cap/protective cover that attaches to your water bottle. This bottom cap is made of 100% silicone, making it durable and heat-resistant. It firmly protects the bottom of your water bottle and prevents scratches. [Product Features] - Size: The bottom diameter is 6.5cm. Please check the size of your water bottle's bottom before purchasing. - As this is an overseas product, there may be minor burrs or scuffs. Please consider this before purchasing. [Uses] - Can be used by children in nursery schools, kindergartens, elementary schools, and junior high schools. - Ideal for sports days, beach trips, swimming pools, club activities, amusement parks (Disney, Universal Studios Japan), travel, and outings. [Notes] - The color may appear slightly different due to lighting conditions. - We cannot accept returns or exchanges due to customer reasons such as size or image differences after purchase. Please understand this in advance. - Dimensions may have slight errors due to being measured by an amateur. Please understand this as well. - The product has been opened once for inspection and to take actual product images. - To keep prices low, we are implementing simple packaging. We appreciate your understanding. - This product is new and unused, but as it is an imported product, there may be minor damage to the product or packaging that does not affect its use. - We ask for your understanding of imported products before purchasing.