A sports wrist trainer comprising a first elongated swing member with grip attached to a second elongated swing member with head by means of a one way 90 degree hinge, and an elastic return means that returns and holds said swing members at a ninety degree angle one to the other. According to alternative embodiments, the wrist trainer is a bat used for learning batting swings or a golf club used for learning golf swings. The one way hinge rotates to provide a trainer having different swing configurations and to maintain the bat or club head facing the ball at impact just like at address. The elastic return means may be removed and the trainer used without it. A second one way 90 degree rotating hinge can be added to the first providing additional versatility and accommodating both right and left handed golfers.

A ball bat, extending along a longitudinal axis. The bat includes a barrel portion, an end cap and a handle portion. The barrel portion is formed of a fiber composite material and includes a proximal region having a continuous single wall construction, a central region and a distal region. The central region includes at least first and second central region walls longitudinally extending from the proximal region, and a distal region includes first and second distal region walls longitudinally extending from the central region. The central region walls and the distal region walls form a first inner barrel wall and an outer barrel wall, respectively. The barrel walls are spaced apart by a first separation. The first separation is unfilled and longitudinally extends over the central region and the first distal region wall. The end cap and the handle portion are coupled to the distal and proximal region, respectively.

A ball bat, extending along a longitudinal axis. The bat includes a barrel portion, an end cap and a handle portion. The barrel portion is formed of a fiber composite material and includes a proximal region having a continuous single wall construction, a central region and a distal region. The central region includes at least first and second central region walls longitudinally extending from the proximal region, and a distal region includes first and second distal region walls longitudinally extending from the central region. The central region walls and the distal region walls form a first inner barrel wall and an outer barrel wall, respectively. The barrel walls are spaced apart by a first separation. The first separation is unfilled and longitudinally extends over the central region and the first distal region wall. The end cap and the handle portion are coupled to the distal and proximal region, respectively.

A ball bat includes an outer shell and an insert positioned in a ball striking area of the outer shell. The insert may include a tube element and one or more spacer elements positioned to form a gap between the tube element and the outer shell along at least a portion of a length of the tube element. In some embodiments, the insert or the gap may extend along only the length of the ball striking area. The outer shell may provide some compliance during a hit to create a trampoline effect, while the insert may provide a backstop to limit radial deflection of the outer shell.

A ball bat includes an outer shell and an insert positioned in a ball striking area of the outer shell. The insert may include a tube element and one or more spacer elements positioned to form a gap between the tube element and the outer shell along at least a portion of a length of the tube element. In some embodiments, the insert or the gap may extend along only the length of the ball striking area. The outer shell may provide some compliance during a hit to create a trampoline effect, while the insert may provide a backstop to limit radial deflection of the outer shell.

A baseball or softball bat having a sound generator disposed therein. A resilient member retains a knocker in relation to an inner surface of the bat when the sound generator is in an inactive, at-rest state. Upon an impact of the barrel with an object, the resilient member flexes or is deformed causing the knocker to strike an inner surface of the bat and generate a simulated bat impact sound.

A baseball or softball bat having a sound generator disposed therein. A resilient member retains a knocker in relation to an inner surface of the bat when the sound generator is in an inactive, at-rest state. Upon an impact of the barrel with an object, the resilient member flexes or is deformed causing the knocker to strike an inner surface of the bat and generate a simulated bat impact sound.

A ball bat, extending along a longitudinal axis. The bat includes a barrel portion, an end cap and a handle portion. The barrel portion is formed of a fiber composite material and includes a proximal region having a continuous single wall construction, a central region and a distal region. The central region includes at least first and second central region walls longitudinally extending from the proximal region, and a distal region includes first and second distal region walls longitudinally extending from the central region. The central region walls and the distal region walls form a first inner barrel wall and an outer barrel wall, respectively. The barrel walls are spaced apart by a first separation. The first separation is unfilled and longitudinally extends over the central region and the first distal region wall. The end cap and the handle portion are coupled to the distal and proximal region, respectively.

A ball bat includes an outer shell and an insert positioned in a ball striking area of the outer shell. The insert may include a tube element and one or more spacer elements positioned to form a gap between the tube element and the outer shell along at least a portion of a length of the tube element. In some embodiments, the insert or the gap may extend along only the length of the ball striking area. The outer shell may provide some compliance during a hit to create a trampoline effect, while the insert may provide a backstop to limit radial deflection of the outer shell.

A ball bat includes an outer shell and an insert positioned in a ball striking area of the outer shell. The insert may include a tube element and one or more spacer elements positioned to form a gap between the tube element and the outer shell along at least a portion of a length of the tube element. In some embodiments, the insert or the gap may extend along only the length of the ball striking area. The outer shell may provide some compliance during a hit to create a trampoline effect, while the insert may provide a backstop to limit radial deflection of the outer shell.