Invisible Glass Wiper Blades 30020 Clarity Silicone All-Weather Hybrid Wiper Blade - 20-Inches, 1 Pack is designed to withstand extreme heat and UV rays. It will not crack, tear, dry out, or deteriorate from sun or UV exposure and will not lose shape or take a compression set in extreme heat. It is also resistant to extreme cold and ice. These blades remain flexible in temperatures as low as -80-Degrees F, and are able to resist ice and snow build-up so it will not freeze to the windshield. Silicone's natural hydrophobic properties repel water for a crystal clear view. All-weather silicone keeps your windshield clearer, longer.