The PIAA Si-Tech (Silicone Technology) Flat Wiper Blade, is a modern, frameless design that delivers all-season performance, thanks to PIAA’s patented silicone impregnated rubber blades. The key to the PIAA Si-Tech’s performance is its frameless design that creates more pressure points across the entire length of the blade for streak-free wiping. Moreover, the design eliminates snow and ice build-up.