Spectra Pro Select Armour Shield Simple Stick was engineered to let more water in while keeping the debris out. The diamond siphon technology allows the system to filter rainwater more effectively than other gutter covers on the market. The Armour Shield wave engineering strengthens the product and allows for the wind to uplift any standing debris. The three easy-step application makes this perfect for the DIYer. Just place peel and stick and this installation is complete.