[TEFLON COATED QUICK DRY FABRIC - AUTO OPEN & CLOSE 9 x RIB WIND PROOF CONSTRUCTION] - Most umbrellas are made of 6 to 8 aluminum ribs that can bend. The Roamwild SuperBRO is manufactured with 9 x premium fiberglass resin-reinforced ribs that flex to withstand powerful gusts without turning inside out, giving you outstanding protection.
eBay