Windproof Automatic Double Umbrella Rain Women 3Fold Female Male 10 Bone Car Luxury Large Business Umbrellas Men Gift ParasolCustomer Reviews This is a double layer ten bone umbrella. It is very strong and windproof. It is one of the best products of our company. Hope you like it! !! Water repellent pongee fabric and quick to dry product information Size: 105 * 61cm Number of ribs: 10 bones Style: Three fold umbrella Features: Double layer ,Windproof,Waterproof Automatic business umbrella 1. Double layer umbrella 2. 10 Ribs wind resistant 3. Automatic open and close