-Convenient to clean as its surface is very smooth-Premium polyester is not only waterproof but also has excellent fade resistance-Easy crank and manual lock allowing you to adjust to your favorite angle for more shade-8 iron ribs greatly enhancing overall sturdiness-A cross base is included and a weighted base(not included) is needed to keep the umbrella stable-Compact size after closing for convenient storage-Easy to assemble with the detailed manualâ- Perfect 10 Feet Patio Umbrella - This pa