In a first aspect, a wearable device is provided for mounting to a foot of a user. The wearable device includes a support structure having a longitudinal axis, and having an interior. The support structure is positioned to support a foot of a user, wherein the support structure has a ground engagement surface. The wearable device further includes a first wheel shaft having a first wheel connected thereto, and a second wheel shaft having a second wheel connected thereto. The first and second wheel shafts are connected to the support structure and are movable between a stowage position in which the first and second wheel shafts hold the first and second wheels above the ground engagement surface and a rolling position in which the first and second wheel shaft hold the first and second wheels below the ground engagement surface. In both the stowage and rolling positions, the first and second wheels are laterally outside of the interior of the support structure.

A wheel lock device for roller skates is disclosed. The device comprises two loops connected by a flexural section, defining two apertures wherein the wheels of the roller skate are placed. The flexural section, made of an elastic material, allows the device to be stretched and fitted over the wheels. The device may include inner or outer chocks proximate to the loops to prevent rolling. Overhangs extending from the inner wall of the aperture prevent the device from sliding off the wheels. Inner and outer pull tabs provide improved grip for installation and removal. The device may have a closed face to protect the wheels from debris. The device is a monolithic structure made of a flexible material, allowing for adaptability to different skate configurations.

A wheel lock device for roller skates is disclosed. The device comprises two loops connected by a flexural section, defining two apertures wherein the wheels of the roller skate are placed. The flexural section, made of an elastic material, allows the device to be stretched and fitted over the wheels. The device may include inner or outer chocks proximate to the loops to prevent rolling. Overhangs extending from the inner wall of the aperture prevent the device from sliding off the wheels. Inner and outer pull tabs provide improved grip for installation and removal. The device may have a closed face to protect the wheels from debris. The device is a monolithic structure made of a flexible material, allowing for adaptability to different skate configurations.

A modular, multi-part roller skate is provided. The multi-part roller skate includes a roller skate body, a front wheel assembly, a rear wheel assembly, a support surface for supporting a footwear of a user, and at least one securing element for securing the footwear to the support surface. The multi-part roller skate is configurable as a modular roller skate with a removable pair of rear wheels, an interchangeable modular roller skate and ice skate, and an interchangeable modular roller skate and cross-country ski/snowshoe. In some embodiments, the multi-part roller skate can also be configured as a length-adjustable skate with a length adjustable skate body that includes separate front and rear foot support structures.

A modular, multi-part roller skate is provided. The multi-part roller skate includes a roller skate body, a front wheel assembly, a rear wheel assembly, a support surface for supporting a footwear of a user, and at least one securing element for securing the footwear to the support surface. The multi-part roller skate is configurable as a modular roller skate with a removable pair of rear wheels, an interchangeable modular roller skate and ice skate, and an interchangeable modular roller skate and cross-country ski/snowshoe. In some embodiments, the multi-part roller skate can also be configured as a length-adjustable skate with a length adjustable skate body that includes separate front and rear foot support structures.

Disclosed is a sports equipment device, including a footwear portion with a sole, a transport portion including a frame and a movement mechanism fixed under this frame, and including a securing mechanism which is able to removably secure the footwear portion to the frame and which includes an upper front block and an upper rear block which are attached to the footwear portion, and a lower front block and a lower rear block which are attached to the frame and are able to be secured to the upper front block and the upper rear block respectively. At least a portion of the sole is created by molding and is molded onto the upper blocks.

Disclosed is a sports equipment device, including a footwear portion with a sole, a transport portion including a frame and a movement mechanism fixed under this frame, and including a securing mechanism which is able to removably secure the footwear portion to the frame and which includes an upper front block and an upper rear block which are attached to the footwear portion, and a lower front block and a lower rear block which are attached to the frame and are able to be secured to the upper front block and the upper rear block respectively. At least a portion of the sole is created by molding and is molded onto the upper blocks.

Functional shoes include a sole, a coupling member including a coupling body detachably coupled to the sole; an auxiliary lever coupled to the coupling body so as to be rotatable toward a bottom surface of the sole; and a fixing part protruding from the auxiliary lever toward the bottom surface of the sole and is detachably coupled to the sole, and at least one functional member provided integrally with the coupling body or detachably coupled to the coupling body to provide a predetermined function to the shoes. The fixing part moves between a coupling position in which the fixing part is coupled to the sole and a separation position in which the fixing part is separated from the sole, by a rotation of the auxiliary lever.

The convertible shoe with interchangeable sole consists of an upper to hold the foot and an interchangeable outsole. There is an attachment surface on the underside of the upper and an attachment surface on the topside of the outsole, and the two attachment surfaces are paired and configured to securely attach the two components while also being detachable to allow for the interchange of different outsoles having different tread surfaces. The attachment surfaces are a non-flat contoured shape. There are two protruding ridges on one surface, one substantially under the toe and the other under the heel and part of the arch. These mate with a recessed channel on the other surface. There is also attachment material on both surfaces that are mated and provide a secure attachment.

The convertible shoe with interchangeable sole consists of an upper to hold the foot and an interchangeable outsole. There is an attachment surface on the underside of the upper and an attachment surface on the topside of the outsole, and the two attachment surfaces are paired and configured to securely attach the two components while also being detachable to allow for the interchange of different outsoles having different tread surfaces. The attachment surfaces are a non-flat contoured shape. There are two protruding ridges on one surface, one substantially under the toe and the other under the heel and part of the arch. These mate with a recessed channel on the other surface. There is also attachment material on both surfaces that are mated and provide a secure attachment.