1. Large capacity of 3.78 liters: This sturdy half - gallon water bottle can hold 3.78 liters of water. When you are doing high - intensity training outdoors or indoors, it can meet the daily water intake and fitness hydration needs of one adult. 2. Record water intake: The time scale markings on the side of this water bottle can help you record your daily water intake, ensuring that you stay well - hydrated throughout the day to achieve your health and fitness goals. 3. Environmentally friendly material: This durable water bottle is made of the highest - quality food - grade PETG resin. It is BPA - free, odorless, and can adapt to any busy lifestyle. 4. Practical design: It uses a traditional screw - thread and silicone gasket structure. The leak - proof cap can tightly seal the water bottle, and the half - gallon water bottle will not retain the smell of powder or juice. 5. Tips for use and maintenance: - Do not fill it with hot water above 120°F. - Do not put it in the dishwasher for cleaning. - Do not put it in the freezer. - Clean it with baking soda and vinegar. - Do not leave the water bottle in the car on hot days. - Do not drop the water bottle.