WGUDE Breathable Shade Serge is a lightweight shading serge made from high-strength fiberglass, featuring double-sided resin impregnation and weather- and stain-resistant surface treatments on both sides. With an approximate 30% open area ratio, the serge allows for light and air permeability while blocking over 80% of sunlight and heat. When used in shading applications, this serge can help reduce structural and foundation costs.