A size-adjustable sport shoe includes a shoe head, a shoe insole, and an adjusting telescopic device including a gear, a shaft gear, first and second gear racks, and handle. The first and second gear racks are located at two lateral sides of an elongated adjustment groove at the shoe head, wherein the upper surface of the second gear rack is lower than the upper surface of the first gear rack. The gear shaft is coupled between the gear and the handle. When the handle is folded perpendicularly to an axis direction of the gear shaft, the gear meshes with the first gear rack to lock up the shoe head at the shoe insole. When the handle is folded to coincide with the axis direction of the gear shaft, the gear meshes with the second gear rack to allow the shoe head to be slid from the shoe insole.

A size-adjustable sport shoe includes a shoe head, a shoe insole, and an adjusting telescopic device including a gear, a shaft gear, first and second gear racks, and handle. The first and second gear racks are located at two lateral sides of an elongated adjustment groove at the shoe head, wherein the upper surface of the second gear rack is lower than the upper surface of the first gear rack. The gear shaft is coupled between the gear and the handle. When the handle is folded perpendicularly to an axis direction of the gear shaft, the gear meshes with the first gear rack to lock up the shoe head at the shoe insole. When the handle is folded to coincide with the axis direction of the gear shaft, the gear meshes with the second gear rack to allow the shoe head to be slid from the shoe insole.

An insertable skate outsole shim for increased attack angle is installable between the outsole heel of a skate and the rear post of a blade or wheel holder. The outsole shim raises the heel of the skater and postures the skater with weight forward decreasing dorsiflexion of the ankle and accommodating deeper knee bend. The outsole shim dampens vibrations and absorbs forces applied during skating. The outsole shim is producible at different sizes adapted for different skating performance. The outsole shim may be produced with an angled surface to correct for overpronation or oversupination.

An insertable skate outsole shim for increased attack angle is installable between the outsole heel of a skate and the rear post of a blade or wheel holder. The outsole shim raises the heel of the skater and postures the skater with weight forward decreasing dorsiflexion of the ankle and accommodating deeper knee bend. The outsole shim dampens vibrations and absorbs forces applied during skating. The outsole shim is producible at different sizes adapted for different skating performance. The outsole shim may be produced with an angled surface to correct for overpronation or oversupination.

Disclosed herein are embodiments describing a front and rear ice-skate adapter that are configured to join a respective front and rear ice-skate blade post to the sole of an ice-skating boot. In certain instances each ice-skate blade post is a multi-degree of freedom adjustable cup that adjusts the position of an ice-skating blade relative to the ice-skate boot sole. Each ice-skate adapter generally comprises a skate sole end that attaches to an ice-skate boot sole and a skate end that attaches to a respective ice-skate blade post. A cup body is defined between the skate sole end and the skate end. The skate sole end comprises a surface that conforms to the shape of the ice-skating boot sole. For added stiffness and stability, the skate sole end further comprises a plurality of appendages that extend outwardly from the cup body.

A skate (e.g., an ice skate) or other footwear for a user, in which a skate boot or other foot-receiving structure for receiving a foot of the user may be configured to enhance power transfer of the user (e.g., for push-off and skating straight), agility of the user (e.g., for turns), and/or other aspects of performance of the user, such as by comprising a sole region that is configured to be disposed under the user's foot and includes different materials strategically distributed (e.g., in a longitudinal direction of the skate boot or other foot-receiving structure) or otherwise implements these enhancements.

A skate (e.g., an ice skate) or other footwear for a user, in which a skate boot or other foot-receiving structure for receiving a foot of the user may be configured to enhance power transfer of the user (e.g., for push-off and skating straight), agility of the user (e.g., for turns), and/or other aspects of performance of the user, such as by comprising a sole region that is configured to be disposed under the user's foot and includes different materials strategically distributed (e.g., in a longitudinal direction of the skate boot or other foot-receiving structure) or otherwise implements these enhancements.

A method of manufacturing a frame for an ice skate boot, the method including: a) moulding a substantially T-shaped body having a first plate and a second plate extending substantially perpendicularly from the first plate; b) milling the first plate to form a platform intended to be uppermost on the frame, in use, for supporting an ice skate boot, the platform having a first support for supporting a forward portion of an ice skate boot and a second support, separate from the first support, for supporting a rearward portion of an ice skate boot; c) milling the second plate to form an elongate body defining an elongate length of the frame, the elongate body having first and second arms extending from the elongate body, where distal ends of the first and second arms are connected to the first and second supports, respectively; and d) forming a mounting arrangement on the elongate body for mounting a blade runner to the elongate body, wherein step a) includes the step of integrally forming the first and second plates from a composite material.

A method of manufacturing a frame for an ice skate boot, the method including: a) moulding a substantially T-shaped body having a first plate and a second plate extending substantially perpendicularly from the first plate; b) milling the first plate to form a platform intended to be uppermost on the frame, in use, for supporting an ice skate boot, the platform having a first support for supporting a forward portion of an ice skate boot and a second support, separate from the first support, for supporting a rearward portion of an ice skate boot; c) milling the second plate to form an elongate body defining an elongate length of the frame, the elongate body having first and second arms extending from the elongate body, where distal ends of the first and second arms are connected to the first and second supports, respectively; and d) forming a mounting arrangement on the elongate body for mounting a blade runner to the elongate body, wherein step a) includes the step of integrally forming the first and second plates from a composite material.

A skate assembly includes a shell structure and a removable tendon guard. The shell structure includes a heel portion, a lateral ankle portion, and a medial ankle portion. The heel portion is formed to cover a human heel. The lateral ankle portion is formed to extend beyond the heel portion. The medial ankle portion is formed to extend beyond the heel portion. The lateral ankle portion and the medial ankle portion are spaced apart to form a notch extending toward the heel portion. The removable tendon guard is removably attached between the lateral ankle portion and medial ankle portion to cover the notch.