Instructional device with adjustable ball-striking sleeve

DETAILED DESCRIPTION Therefore, it is an object of the invention to provide an instructional device having an adjustable ball-striking sleeve which is easily moved along the length of the device to different hitting positions.
It is another object of the invention to provide an instructional device which improves the batter's ability to hit a baseball or softball.
It is another object of the invention to provide an instructional device which improves the batter's ability to bunt a baseball.
It is another object of the invention to provide an instructional device wherein the ball-striking sleeve can be positioned to represent the sweet spot for standard bats of all lengths.
It is another object of the invention to provide an instructional device which uses the effect of friction to hold the ball-striking sleeve in a fixed position during a batter's swing.
It is another object of the invention to provide an instructional device which can be used to exercise the batter's hand-eye coordination.
It is another object of the invention to provide an instructional device which exercises the batter's "quick twitch" muscles located in the hands, wrists, and forearms to improve the bat speed of the batter.
It is another object of the invention to provide an instructional device which is relatively light-weight such that the batter can practice increased consecutive swing repetitions to develop muscle memory without developing substantial muscle fatigue.
It is another object of the invention to provide an instructional device which generates an audible indication of bat speed when swung.
It is another object of the invention to provide an instructional device which creates a "swoosh" sound when swung.
It is another object of the invention to provide an instructional device which helps prevent lunging, overswinging, and uppercutting.
It is another object of the invention to provide an instructional device which helps develop top hand/bottom hand control of the batter.
It is another object of the invention to provide an instructional device which helps the batter identify the ideal contact zone