A ball bat extending along a longitudinal axis. The bat includes a handle portion, a barrel portion and an end cap. The barrel portion includes a proximal region and a distal region. The proximal region of the barrel portion is coupled to the handle portion by a first pivot joint. The distal region of the barrel portion is coupled to the end cap by a second pivot joint. The first and second pivot joints movably support the barrel portion relative to the longitudinal axis.

A disc launching device includes a long handle and a disc holder at one end of the handle. The handle may include a grip end for holding the handle, an attachment end opposite the grip end, and a shaft extending from the grip end to the attachment end. The disc holder is attached to the attachment end of the handle. It includes a front rail for holding one side of a disc, a back rail for holding an opposite side of the disc, and at least one support member extending between the front rail and the back rail. The front rail and the back rail form an opening on one side of the disc holder, configured to allow the disc to launch out of the disc holder through the opening when sufficient forward momentum is applied to the disc holder via the handle.

A ball bat includes outer shell segments longitudinally spaced apart from each other to form a gap between them. A joint connects the segments. A first outer shell segment may include a barrel portion of the ball bat and at least part of a tapered portion of the ball bat. A second outer shell segment may include at least part of the tapered portion. The joint may include a tubular element having a first portion positioned within the first outer shell segment and at least partially overlapping an interior surface of the first outer shell segment, and a second portion positioned within the second outer shell segment and at least partially overlapping an interior surface of the second outer shell segment. The tubular element may include an elastomeric material. In some embodiments, the joint may be formed by an elastomeric material connecting the outer shell segments in the gap.

A sports practice tool 1 comprising a grip 20 on a proximal end side of a practice tool main body 10, wherein the practice tool main body 10 comprises a first flexible part 12 and a second flexible part 14 extending in mutually different directions along a first imaginary plane P1, the first flexible part 12 and the second flexible part 14 are connected to each other in a bent manner, the first flexible part 12 is formed such that primary deflective deformation occurs along the first imaginary plane P1, and the second flexible part 14 is formed such that primary deflective deformation occurs along a second imaginary plane P2 that intersects the first imaginary plane P1.

An active footwear suspension system is disclosed. The footwear system provides dynamic suspension using at least one or more variable resistance beams. At least one or more VRB from an anchor plate positioned forward of and/or aft of an arch section of the footwear, thus providing selectable suspension to the wearer. The selected rotation of the VRBs from a first position to a second position provides customized suspension between a minimum resistance to a maximum resistance per zone.

A ball bat includes outer shell segments longitudinally spaced apart from each other to form a gap between them. A joint connects the segments. A first outer shell segment may include a barrel portion of the ball bat and at least part of a tapered portion of the ball bat. A second outer shell segment may include at least part of the tapered portion. The joint may include a tubular element having a first portion positioned within the first outer shell segment and at least partially overlapping an interior surface of the first outer shell segment, and a second portion positioned within the second outer shell segment and at least partially overlapping an interior surface of the second outer shell segment. The tubular element may include an elastomeric material. In some embodiments, the joint may be formed by an elastomeric material connecting the outer shell segments in the gap.

A golf club stabilizing device includes a flexible rod (e.g., a fiberglass rod) encircled by one or more compressible spacers (e.g., polyurethane foam spacers) secured thereto by adhesive and/or heat shrink. When inserted into the hollow shaft of a golf club, the spacers are at least somewhat compressed, thereby exerting a force on the inside wall of the shaft that inhibits motion of the flexible rod relative to the shaft.

A golf club includes a head, a shaft, and a grip. The golf club has a club vibration frequency of less than or equal to 210 cpm. The golf club has a swing weight of greater than or equal to D5. With the golf club, a force acting on the player's body during a swing can be reduced. The golf club can stabilize swing.

A ball bat includes a barrel portion, a handle portion, and a joint connecting the handle portion to the barrel portion. In some embodiments, the joint includes a releasable connector configured to releasably connect the barrel portion to the handle portion. In some embodiments, the joint includes two releasable connectors to releasably connect the barrel portion to the handle portion. The ball bat may include a flexible rod element positioned between the two releasable connectors. The rod element may include an elastomeric material. In some embodiments, the ball bat may further include a safety connector between the barrel portion and the handle portion or a releasable connector may include a threaded connection to resist release of the releasable connector. In some embodiments, the joint may include a rotatable element for adjusting flex.

A shaft 6 has a forward flex of equal to or longer than 130 mm and equal to or shorter than 178 mm. When the forward flex is represented by f1, and a backward flex is represented by f2, f2/(f1+f2) is equal to or greater than 0.46 and equal to or less than 0.50. When a distance between a butt end Bt and a center of gravity Gs of the shaft is represented by L (centimeter), and a weight of the shaft is represented by Ws (kilogram), a butt end GLL is calculated by the following formula:
butt end GLL=WsLL,
wherein the butt end GLL (kg.Math.cm.sup.2) is equal to or less than 110 kg.Math.cm.sup.2.