Plemo Windproof & Waterproof Umbrella Auto-Open Mechanism with Anti-slip Grip, Quick Dry (Blue 8 Ribs) WATERPROOF: Made from high-density 270T fabric with a water-repellent Teflon coating; easily shakes off raindrops to stay consistently dry; passed a high-intensity waterproofing test; withstands the pressure of a water column measuring 1,000 mm without leaking 50MPH WINDPROOF: 8 reinforced steel ribs and a strong runner resist inversion in strong winds; rust-proof treatment on the ribs ensures durable use DAILY NECESSITY: Auto-open mechanism allows for easy one-handed operation; measures 114 cm (45") in diameter when unfolded and can shelter 12 people; useful on sunny and rainy days and on different occasions HIGH QUALITY: Wooden shaft with an anti-corrosion treatment combines superior craftsmanship, elegance and durability; J-shaped contoured handle gives you a comfortable grip 98% UV PROTECTION: UPF 40+ and high-density 270T canopy blocks 98% of UV rays; safeguards your skin against direct sunshine