The 10 ribs are super sturdy and the workmanship is high quality. Designed with 10 flexible resin-reinforced fiberglass ribs and a high-quality galvanized steel shaft, the compact umbrella is strong and flexible and can withstand strong winds without turning inward. Large, light umbrella. The pop-up umbrella has an opening diameter of 104 cm, which can completely cover two people from the rain. When folded, the folding umbrella measures only 31 cm. Portable and lightweight (1 lb) umbrella that fits easily into a book bag, purse, briefcase, backpack or luggage, perfect for men and women. Automatically turns on and off. Automatic opening and closing feature allows for easy one-handed operation. Just press a button to open or close the umbrella in a second. This design makes using an umbrella more efficient and convenient and won't cause you trouble on rainy days. Waterproof and quick drying. The travel umbrella uses a high-quality canopy to protect you in heavy downpours. The canopy is made of high-density impact-resistant fabric and a waterproof coating, making your folding umbrella highly waterproof and quick-drying.