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Review title: Stupidest design ever
Product review: So this is how it works:There is a little ball in the little tube you see there. The ball floats. So, as the water level rises to the top, the ball rises to plug the hole. Simple right?Unfortunately, this product's purpose is to hold back five gallons of water. You simply can't carry that much water without bobbing up and down/swishing the water back and forth. This causes the ball to move around and water splashes out. As the water level lowers, so does the ball, thus making the cap completely useless. Enjoy having water shoot up in your face with every step!Also, the wings on the side(to help remove the cap), although helpful, did not fit in my water cooler. I had to cut them off.
