Opened, but unused. --- The GW9 water bottle is the perfect companion for staying hydrated on the go. With a sleek matte black finish, this bottle is not only stylish but also boasts excellent functionality, keeping drinks cold for up to 24 hours and warm for up to 12 hours. Made from high-quality stainless steel, this water bottle offers unparalleled durability and strength, ensuring it will last for years to come. The double-walled construction provides superior insulation, keeping your beverages at the perfect temperature in any weather.