Kimberly-Clark made non-woven durable polypropylene outer layer for hard strike strength to progressively softer layers near the surface of your vehicle. Custom sizes are available to insure proper fit, maximizing your protection from hail. We offer a 4 year warranty on materials and workmanship. It's not a matter of if... it's a matter of when! Don't wait until it's too late! Don't be fooled by imitations! Due to customization, please allow up to 4-6 weeks for delivery.