A golf club head has a body defining a ball striking face. The body further has a rear portion comprising a plurality of side walls and a planar lower portion. The plurality of side walls extend downward from a top of the golf club head towards the planar lower portion. The body further comprises a cover extending over the rear. The body further defines a gap between the cover and the planar portion.

A piece of sports equipment includes: a surface; and base paint including magnetic particles, the base paint being located on the surface of the piece of sports equipment, the magnetic particles being arranged based on a predetermined design after being subjected to magnetic field generated by one or more magnets. A method of manufacturing a piece of sports equipment includes: obtaining an object including one or more magnets arranged in a predetermined design; applying a base paint including magnetic particles to an exterior surface of the piece of sports equipment; while the base paint is fluid, positioning the piece of sports equipment within a magnetic field of the one or more magnets; and maintaining the positioning of the piece of sports equipment for at least a predetermined period, thereby allowing the magnetic particles in the base paint to arrange based on the predetermined design of the one or more magnets.

A piece of sports equipment includes: a surface; and base paint including magnetic particles, the base paint being located on the surface of the piece of sports equipment, the magnetic particles being arranged based on a predetermined design after being subjected to magnetic field generated by one or more magnets. A method of manufacturing a piece of sports equipment includes: obtaining an object including one or more magnets arranged in a predetermined design; applying a base paint including magnetic particles to an exterior surface of the piece of sports equipment; while the base paint is fluid, positioning the piece of sports equipment within a magnetic field of the one or more magnets; and maintaining the positioning of the piece of sports equipment for at least a predetermined period, thereby allowing the magnetic particles in the base paint to arrange based on the predetermined design of the one or more magnets.

A golf swing resistance device that secures to a golf club to provide increased aerodynamic drag during a golf swing. The device includes disk-shaped plates with a through-bore in the center of the plates. The plates are secured to the golf club by passing the grip end of the golf club through the through-bore of the plates. The plates align along the golf shaft of the golf club and abut against the golf club clubhead during a golf swing. Multiple plates can be stacked along the length of the golf shaft. The plates have a larger span (or diameter) than the golf shaft thereby increasing the cross-sectional area of the golf club and thus increasing the aerodynamic drag on the golf club during a golf swing. The plates can vary in size and quantity to provide variable amounts of aerodynamic drag.

A golf club shaft system and golf club shaft possessing unique characteristics including flexural and torsional rigidity profiles.

A golf club shaft system and golf club shaft possessing unique characteristics including flexural and torsional rigidity profiles.

A multi-component golf club shaft possessing unique characteristics including flexural and torsional rigidity profiles.

A multi-component golf club shaft possessing unique characteristics including flexural and torsional rigidity profiles.

A method for applying base paint non-uniformly to a golf shaft includes: inserting a portion of a golf shaft lengthwise through an aperture in a paint applicator, the paint applicator having a first surface and a second surface opposite the first surface, where one of (a) the aperture is non-circular and (b) the aperture includes a plurality of slits formed circumferentially around the aperture; actuating a painting apparatus, thereby causing the base paint to contact the golf shaft and the second surface of the paint applicator; and pulling the golf shaft lengthwise through the aperture in the paint applicator, thereby non-uniformly applying the base paint lengthwise along the portion of the golf shaft.

A method for applying base paint non-uniformly to a golf shaft includes: inserting a portion of a golf shaft lengthwise through an aperture in a paint applicator, the paint applicator having a first surface and a second surface opposite the first surface, where one of (a) the aperture is non-circular and (b) the aperture includes a plurality of slits formed circumferentially around the aperture; actuating a painting apparatus, thereby causing the base paint to contact the golf shaft and the second surface of the paint applicator; and pulling the golf shaft lengthwise through the aperture in the paint applicator, thereby non-uniformly applying the base paint lengthwise along the portion of the golf shaft.