The umbrella cloth uses ultra water resistant 210T micro-weave fabric, thicker and stronger. The Ultimate Travel Umbrella is constructed with hardened stainless steel coated in high-grade umbrella bone. We use high quality fiber steel frame for the tips and ribs, which is strong and flexible whilst not being so heavy that you hand fatigues. This silk derived material is lightweight and quick drying. Umbrella will protect you from anything that mother nature can throw at you, rain, hail or shine.