ClearPlus 80181 Winter Series Wiper Blade, 18" (Pack of 1) Synthetic rubber boot encasing on the frame provides stronger tear and ozone resistance to the rubber boot as compared to natural rubber Boot also provides additional protection when the product is exposed to snow scrapers and car wash equipment With aheavy-duty steel structure and a larger profile wiping element, this blade lifts heavy, slushy snow and ice better than all season blades Meets or exceeds all safety and durability standards established by the Society of Automotive Engineers