A best seller, this market umbrella has a aluminum frame with black powder coat finish. The canopy is crafted from Sunbrella,100% solution dyed acrylic outdoor fabric. The 8 rib canopy supports are attached to the frame with weather-resistant PVC fitting materials for easy use and durability. Unique to this design is the infinite collar tilt mechanism design for easy use and adjustment block the sun rays as it moves through the day. A 50 lb or heavier base weight is recommend for use with dining tables or free standing use in outdoor spaces that have light breeze. See sales associate for details on the variety of bases options available for related wind conditions. A protective umbrella cover for storage is recommended for this canopy, keeping it clean and protected when not in use. Base weights and protective covers are sold separately. This umbrella design also has an array of fabric options available for custom orders in solids, stripes and patterns, prices vary by fabric grades. The protective cover and base options are sold separately.