When You need to choose a cover for Your Patio Umbrella there are 2 main variables to consider :
Material of the canopy:
Regarding the material, the most important thing is when are You going to use the umbrella? If it is only for sun protection, a good quality acrylic fabric is advised, or, in alternative, a micro aired PVC that allows the air to circulate, while protecting You from UV rays.
If You need the umbrella when it’s raining than the PVC materials are the most suited.
Many Patio Umbrellas producers use Polyester, which is a cheap substitute for acrylic fabrics. It’s main quality is its cost, but it does not offer a long term guarantee on UV stability, it is easy to tear and does not protect from UV rays completely.
The canopies from most producers are mainly made with a single valve on top.
EdenGarden offers a patented anti-wind Split Solution system, with 7 vents, that allows greater wind resistance.