I already have the Thermos Nissan 16 oz. BackPack water bottle which is absolutely awesome. But this one holds more water and is more durable. This one is great when you are outside in hot weather away from a water source. I hesitated at first because I thought it would be big and bulky, but it isn't. It fits in the cup holder in our truck. Also, it keeps the water cold for about 2 days.