S Blade 50 Designed with performance and extra resilience in mind, S Blade 50 is made of premium quality materials with fibers shaped like a letter "S." While less advanced artificial grass blades are not shaped in any specific configurations, S Blade is curved. Curved blades return quickly to its original position after pressure is applied to the surface (resilience.) They also create a realistic look; sun rays hit the blades, and since light reflects in different directions, it mattes the entire area significantly reducing a plastic shine.