A golf club shaft system and golf club shaft possessing unique flexural and torsional rigidity profiles, while providing significant adjustability to fine tune the shaft to a particular golf swing.

A golf club shaft system and golf club shaft possessing unique flexural and torsional rigidity profiles, while providing significant adjustability to fine tune the shaft to a particular golf swing.

Provided is an adjustable putter grip. The adjustable putter grip includes a first grip member coupled adjacent a first end of a putter shaft. A putter head is coupled to a second end of the putter shaft. The adjustable putter grip also includes a second grip member coupled to the putter shaft between the first grip member and the second end of the putter shaft. The first grip member and the second grip member are rotatable with respect to each other to adjust grip position, the second grip member is rotatable with respect to the first grip member to adjust grip position, or the first grip member is rotatable with respect to the second grip member to adjust grip position. A method of forming a custom grip or custom fitting of a golfer is also disclosed.

A golf club has a first shaft coupled to a club head, a second shaft configured to slidably engage a portion of the first shaft, a grip coupled to the second shaft, and an adjustable length shaft assembly received by the second shaft and configured to allow a portion of the first shaft to slide in relation to the second shaft in a first configuration, and to restrict a portion of the first shaft from sliding in relation to the second shaft in a second configuration. The grip is restricted from rotation about the first shaft or the second shaft as the first shaft slides in relation to the second shaft.

A golf club has a first shaft coupled to a club head, a second shaft configured to slidably engage a portion of the first shaft, a grip coupled to the second shaft, and an adjustable length shaft assembly received by the second shaft and configured to allow a portion of the first shaft to slide in relation to the second shaft in a first configuration, and to restrict a portion of the first shaft from sliding in relation to the second shaft in a second configuration. The grip is restricted from rotation about the first shaft or the second shaft as the first shaft slides in relation to the second shaft.

A multi-material golf shaft having a butt portion joined to a tip portion and possessing unique relationships, including rigidity relationships, which provide beneficial performance characteristics including improved stability.

Provided is an adjustable putter grip. The adjustable putter grip includes a first grip member coupled adjacent a first end of a putter shaft. A putter head is coupled to a second end of the putter shaft. The adjustable putter grip also includes a second grip member coupled to the putter shaft between the first grip member and the second end of the putter shaft. The first grip member and the second grip member are rotatable with respect to each other to adjust grip position, the second grip member is rotatable with respect to the first grip member to adjust grip position, or the first grip member is rotatable with respect to the second grip member to adjust grip position. A method of forming a custom grip or custom fitting of a golfer is also disclosed.

An improved racquet handle, such as for a tennis or racquetball racquet, comprised of a flex control device that enables a user to adjust the flexibility of the racquet handle. The increased flexibility of the racquet handle enables a user to impart greater force on a ball, such as a tennis ball, and also dampens or reduces the amount of vibration and/or shock otherwise imparted to the racquet user when the racquet strikes the ball. The flex control device of the present invention is comprised of a fixed insert portion and an interchangeable, removable insert that enables a user to control the amount of the flexibility of the racquet.

A golf shaft having a butt portion joined to a tip portion by a coupler and possessing unique relationships, including rigidity relationships, which provide beneficial performance characteristics including improved stability.

A sports product may include a support member and an impact region configured to impact an object. The impact region may be coupled to the support member. The sports product may also include a shear thickening material in at least one of the support member or the impact region. The shear thickening material may be configured to exhibit shear thickening behavior when an impact occurs between the impact region and the object.