Design: Engineered Fit Woven upper material that stretches moderately laterally but, not along the length of the foot Engineered Fit Flame optimal pattern for fitting and shoe making, reducing lateral shifting during play ZeroGlide removable sockliner with a Mesh for increased foot hold and maximum comfort Engineered Fit Sponge lightweight sponge with minimum required mass to enhance fit In-Shoe Comfort: MIZUNO ENERZY (FOAM): Offering versatility in its application, while still maintaining softness and resilience to help enhance performance capabilities KaRVO RSTM: High resilience insole board for enhanced energy return Durability & Traction: a Triangle Studs provide grip to enable vertical speed and fine movements Artificial grass outsole