In one or more arrangements, a golf club head having improved sole geometry is provided. The golf club head includes a striking face portion located at a frontal portion of the golf club head, a topline located at an upper portion of the golf club head, a heel portion located at a proximal end of the golf club head, a toe portion located at a distal end of the golf club head opposite the heel portion, and a sole located at a lower portion of the golf club head. The golf club head is adapted to receive a shaft. The golf club has a cross section having forward camber with a radius of curvature is less than or equal to a sole width of the sole and that is greater than or equal to a leading edge height of the golf club head.

A golf club head is provided having a club body having a front portion, a rear portion, a toe portion, and a heel portion. The club head also having a central portion connected with the front portion. A frame is connected with the central portion configured to provide a lightweight crown portion being located above an offset plane.

A muscle activating and exercising device and a method of activating and exercising muscles of the human body. The device includes an outer material and at least one flexible inner material. The device is an elongated device that is pliable enough to be wrapped around an object. The device also has an outer surface that creates a frictional fit between the device and the wrapped object. The wrapped object could be, for example, a wrist or ankle on a human limb or a location on a portion of sports equipment (e.g., a lacrosse stick, baseball bat, hockey stick, golf club or tennis racket). The method includes a method of activating muscles using the device. Through such a method, a user can, for example. build muscle strength and/or reduce muscle tremors.

A muscle activating and exercising device and a method of activating and exercising muscles of the human body. The device includes an outer material and at least one flexible inner material. The device is an elongated device that is pliable enough to be wrapped around an object. The device also has an outer surface that creates a frictional fit between the device and the wrapped object. The wrapped object could be, for example, a wrist or ankle on a human limb or a location on a portion of sports equipment (e.g., a lacrosse stick, baseball bat, hockey stick, golf club or tennis racket). The method includes a method of activating muscles using the device. Through such a method, a user can, for example. build muscle strength and/or reduce muscle tremors.

A golf club head includes a metallic front body coupled with a rear body to define a substantially hollow structure. The metallic front body includes a strike face and a surrounding frame that extends rearward from a perimeter of the strike face. The rear body includes a crown member and a sole member coupled to the crown member. The sole member comprises a structural layer formed from a filled thermoplastic material and a fiber reinforced composite resilient layer bonded to an external surface of the structural layer. The structural layer includes a plurality of apertures extending through a thickness of the structural layer, and the resilient layer extends across each of the plurality of apertures. The structural layer and the resilient layer each include a common thermoplastic resin component, and are directly bonded to each other without an intermediate adhesive.

Embodiments of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a golf club head may include a body portion with a toe portion, a heel portion, a top portion, a sole portion, a back portion, and a front portion having a face portion with a face portion thickness extending between a front surface and a back surface. The body portion may be associated with a body portion volume. The golf club head may also include an interior cavity. The interior cavity may include an elastic polymer material. Other examples and embodiments may be described and claimed.

A golf club head is provided having a club body having a front portion, a rear portion, a toe portion, and a heel portion. The club head also having a central portion connected with the front portion. A frame is connected with the central portion configured to provide a lightweight crown portion being located above an offset plane.

Examples of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a top portion of a golf club head includes an alignment aid having a first plurality of strip portions and a second plurality of strip portions bounded by a virtual outline. The first plurality of strip portions have different surface areas. The second plurality of strip portions have different surface areas. The first plurality of strip portions and the second plurality of strip portions touch or border upon the virtual outline. The first plurality of strip portions are spaced apart in a rear-to-front direction of the golf club head and are ordered by decreasing surface area. The second plurality of strip portions are spaced apart in the rear-to-front direction and are ordered by decreasing surface area. Other examples and examples may be described and claimed.

Examples of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a top portion of a golf club head includes an alignment aid having a first plurality of strip portions and a second plurality of strip portions bounded by a virtual outline. The first plurality of strip portions have different surface areas. The second plurality of strip portions have different surface areas. The first plurality of strip portions and the second plurality of strip portions touch or border upon the virtual outline. The first plurality of strip portions are spaced apart in a rear-to-front direction of the golf club head and are ordered by decreasing surface area. The second plurality of strip portions are spaced apart in the rear-to-front direction and are ordered by decreasing surface area. Other examples and examples may be described and claimed.

A system for optimizing weight distribution of a golf club including a weight receiving grip, the weight receiving grip configured to be affixed to a proximal end of a golf club shaft, wherein the weight receiving grip comprises a generally tubular member comprising a shaft bore configured to surround a proximal portion of the shaft, wherein the weight receiving grip comprises a weight retention portion at a proximal end of the weight receiving grip, the weight retention portion configured to engage a weight member, a grip expanding tool configured to deflect a portion of the weight receiving grip facilitating installation or removal of the weight members from the weight receiving grip.