Select Spark TB NFHS v25 Soccer BallThe Select Spark TB NFHS v25 is Select's thermo bonded match ball, engineered for the smoothest possible surface and zero water uptake. Unlike hand stitched or dual bonded balls, the Spark uses Thermal Bonding (TB) technology 32 panels heat fused together without seams or stitching. The result is a ball that flies truer in the air, retains its shape longer, and performs identically in dry and wet conditions. NFHS Approved for U. S. varsity high school