human
How do I choose a good reusable water bottle?
assistant
When choosing a reusable water bottle, you should consider the material it is made of. Look for one that is BPA-free and has been tested to be durable and leak-proof. You also want to make sure it is easy to clean and refill. Consider the size and shape as well; a narrow neck will help keep your hand from warming up the water too quickly. Finally, look for a design that is aesthetically pleasing and fits with your lifestyle.