Quarterbacks dropping back in the pocket can solidly grip this Spalding Alpha Official-Size Football to deliver a precise strike to the receiver and keep the drive alive. Whether the field general is tossing downfield bombs, wideouts are reeling in jaw-dropping catches or the running back is eluding defenders en route to the end zone, players can maintain a sure grasp on the ball with the S tack type leather cover. From the heat of training camp to the chills of a late-season game, the ball will retain air thanks to the TPU bladder. Two-ply TPU bladder helps ensure lasting air retention, so coaches can focus on this week's game plan instead of devoting additional time to inflating balls Hartco liner allows the ball to hold its shape through touchdown celebrations, punts and tackles S tack type leather cover offers an enhanced grip, so players can hold onto the ball and minimize costly turnovers Raised diamond lace helps the quarterback properly hold the ball to throw tight spirals Boxed sewn strip provides an authentic appearance and simple point of reference for players, coaches and officials