Football Training Balls. This is not a replica. Construction / Technology, Patented Accented Cover Material-PU Leather Superior Performance – Patented ACENTEC structure. Our machine sewing technology, over a cushion foam layer, produces a smooth, seamless cover that cannot be accomplished by hand sewing. The result is a uniform surface and reduced water absorption, ensuring exceptional performance that is not affected by weather conditions. Seamless for ultimate ball control. A surface that enhances the flight stability – The textured surface of the ball reduce turbulence and stabilize it while in flight. This enhances ball control, resulting in more accurate passes and shots.