Abstract: A ball striking device, such as an iron-type golf club head, includes a face having a ball striking surface and a body connected to the face. The body has a sole surface extending rearward from a leading edge of the face, and a toe surface extending rearward from a toe edge of the face. The sole surface configured to confront the playing surface. The iron-type club head may have an elongated channel extending from a heel side in the sole member to an end point within the toe surface. The elongated channel is recessed from the sole surface and toe surfaces and is spaced from the leading and toe edges of the face. The iron-type club head may also have a plurality of weighting elements that are adjustable by the user.

Abstract: Head wearable devices and methods are disclosed where a head wearable device includes a headpiece including a headband and an occipital basket attached to the headband, and a first housing attached to the headband. A depth adjuster is attached to the first housing and configured to change, by controlling a distance between the occipital basket and the first housing, a depth of the headpiece. A second housing is attached to the occipital basket, and a headband adjuster is attached to the occipital basket to change a circumference of the headpiece by controlling a distance between respective opposing ends of the headband and the second housing.

Abstract: A ball striking device, such as an iron-type golf club head, includes a face having a ball striking surface and a body connected to the face. The body has a sole surface extending rearward from a leading edge of the face, and a toe surface extending rearward from a toe edge of the face. The sole surface configured to confront the playing surface. The iron-type club head may have an elongated channel extending from a heel side in the sole member to an end point within the toe surface. The elongated channel is recessed from the sole surface and toe surfaces and is spaced from the leading and toe edges of the face. The iron-type club head may also have a plurality of weighting elements that are adjustable by the user.

Abstract: Head wearable devices and methods are disclosed where a head wearable device includes a headpiece including a headband and an occipital basket attached to the headband, and a first housing attached to the headband. A depth adjuster is attached to the first housing and configured to change, by controlling a distance between the occipital basket and the first housing, a depth of the headpiece. A second housing is attached to the occipital basket, and a headband adjuster is attached to the occipital basket to change a circumference of the headpiece by controlling a distance between respective opposing ends of the headband and the second housing.

Abstract: Head wearable devices and methods are disclosed where a head wearable device includes a headpiece including a headband with a top strap, a first housing attached to an outer surface of the top strap of the headband, a depth adjuster attached to the first housing wherein the depth adjuster is configured to change a depth of the headpiece, and a headband adjuster configured to change a circumference of the headpiece.

Abstract: An iron-type golf club head and set having a passageway extending from a closed void behind the face and accessible from an exterior of the body.

Abstract: An iron-type golf club head and set having a passageway extending from a closed void behind the face and accessible from an exterior of the body.

Abstract: Head wearable devices and methods are disclosed where a head wearable device includes a headpiece including a headband with a top strap, a first housing attached to an outer surface of the top strap of the headband, a depth adjuster attached to the first housing wherein the depth adjuster is configured to change a depth of the headpiece, and a headband adjuster configured to change a circumference of the headpiece.

Abstract: A head wearable device includes a headpiece, a housing attached to the headpiece, a luminaire attached to the headpiece, the luminaire including a luminaire housing and at least one light source located within the luminaire housing, a duct system connecting the luminaire to the housing, a ball joint rotatably connecting the duct system to the luminaire, and an air moving device configured to induce a cooling air flow through an inlet in the luminaire housing, through the heatsink, through the ball joint, through the duct system, and out of an exhaust in the housing attached to of the headpiece.

Abstract: An iron-type golf club head and set having a passageway extending from a closed void behind the face and accessible from an exterior of the body.

Abstract: A ball striking device, such as an iron-type golf club head, includes a face having a ball striking surface and a body connected to the face. The body has a sole surface extending rearward from a leading edge of the face, and a toe surface extending rearward from a toe edge of the face. The sole surface configured to confront the playing surface. The iron-type club head may have an elongated channel extending from a heel side in the sole member to an end point within the toe surface. The elongated channel is recessed from the sole surface and toe surfaces and is spaced from the leading and toe edges of the face. The iron-type club head may also have a plurality of weighting elements that are adjustable by the user.

Abstract: An iron-type golf club head and set having a passageway extending from a closed void behind the face and accessible from an exterior of the body. The set includes close control of variables among club heads.

Abstract: A ball striking device, such as an iron-type golf club head, includes a face having a ball striking surface and a body connected to the face. The body has a sole surface extending rearward from a leading edge of the face, and a toe surface extending rearward from a toe edge of the face. The sole surface configured to confront the playing surface. The iron-type club head may have an elongated channel extending from a heel side in the sole member to an end point within the toe surface. The elongated channel is recessed from the sole surface and toe surfaces and is spaced from the leading and toe edges of the face. The iron-type club head may also have a plurality of weighting elements that are adjustable by the user.