Leaves textured in S-shape exclude the possibility of unnatural, plastic look of your lawn. While natural grass is green because it contain a molecule called chlorophyll, with an artificial grass it is important to create a proper angle for sun light to reflect in a similar manner without mirroring effect. S -€“Blade helps grass to look more realistic even on very sunny day. While flat blades reflect the entire spectrum of light, making grass appear white, S-shape helps to diffuse reflectance, texture and color.