31inch big promotional golf umbrella with air vent 1) big golf umbrella 2) windproof promotional umbrella Detail SpecPromotional golf umbrella, gift umbrella, logo umbrella, double layer umbrella, windproof umbrella, UV protection umbrella1) size: radius 31inch, 8 panels2) Fabric: pongee, with vent3) Frame:high quality fibreglass frame4) Handle: rubber5) Printing: Any design can be customized, ...