Introducing HydraShell™ MAX by Marco Industries. Manufactured from 100% synthetic materials, HydraShell™ MAX has a four-layer construction making it 25 times stronger than #15 felt and 12 times stronger than #30 felt. True Synthetic has a Class A fire rating and a 90-day UV exposure rating. It won’t wrinkle or absorb water and it stays flexible in cold weather. 
 
HydraShell™ MAX comes in a 1,000 square foot roll and boasts a 30-Year Warranty.