... reinforce, 18mm x 18mm aluminum short ribs with reinforce 2.Fabric:600 x 600D polyester roof with vent design, ... umbrella,Folding umbrella,Straight umbrella,Women parasol,Promotional umbrella,Advertising umbrella,Fashion design umbrella,Children umbrella,LED umbrella,Beach umbrella,Patio umbrella,Outdoor umbrella,Corporate umbrella,Gift umbrella,Sun umbrella,Rain umbrella,Windproof umbrella; ...