LeafProof is a solid aluminum gutter cover that installs over existing gutters without penetrating your roof. The patented ?S-Bend? slows the flow of rainwater, causing the water to adhere to the LeafProof panel. LeafProof makes surface tension work for you, the homeowner. The ?S? bend causes the water flow to reverse and churn, which slows the momentum of the water as it comes off the roof. The ?S? bend also permits the portion of the LeafProof panel which covers the gutter, to be installed at a fairly level slope. This reduces the speed of the water even more. As a result, when the water flow reaches LeafProof?s water channel, the water flow once again reverses and drains into the gutter.