Wibsil curve steel water bottles is made of high quality stainless steel. Also, no matter how many times you refill it, this bottle will keep your drink fresh and clean tasting. Additionally, it is used to keep in the freezer/Refrigerator. But apart from it you can use it anywhere like office, home, kitchen and in the travelling also. Wibsil steel water bottle can be used by anyone in your family and you need not to worry about the changing temperatures when you are using the water bottle. This bottle specially designed for cold liquids and beverage. This product should not be used for carbonated drink.