This product uses the standard water bottles but, does not hold but a little over 16 oz. of water at a time. It says in the handbook that if you use 2 cups of water, it will take the machine 25 minutes to get the next 2 cups cold. It doesn't say that in the description on the item. Product does not have the piercing device that you turn the water bottle upside down on. So I'm not sure how the water is supposed to drain into the very small reservoir. If you have to remove the entire cap from the top of the water bottle, that is very dumb. I will stick with the cooler I have that sets on the floor taking up room.