A wearable motorized device comprising a shoe bracket, which can be fastened to a shoe; wheels that are installed on the left and right sides of the shoe bracket in parallel to support the wearer's lateral skating and longitudinal walking; a driving motor for rotationally driving the wheels; and a battery pack for powering the driving motor. The wheels are not coaxially installed on the two sides of the shoe bracket to drive the wearer's longitudinal skating, but instead are installed on the two sides of the shoe bracket in parallel to drive the wearer's lateral skating; the wearer can position his/her legs apart during skating, so the skating stability is improved. Its general contour does not significantly exceed the contour of the shoe in the longitudinal direction, thus and it will not strain the wearer when ascending or descending stairs.

A skateboard foot strap system is provided which may have a plurality of coupling discs each having a top portion and bottom portion. Further, the top portion may comprise a plurality of concave down edge structures where each of the plurality of concave down edge structures may terminate into a planar top surface, each of the plurality of concave down edge structures may terminate into a planar bottom surface, and the bottom portion may utilize a plurality of threaded bolts extending from the planar bottom surface and may be structured to be disposed through respective coupling apertures. Further, the system may utilize an elongate flexible foot strap having a first width dimension smaller than that of a second width dimension of each of the plurality of coupling discs. The elongate flexible foot strap may be disposed between the plurality of threaded bolts.

A detachable roller skating structure includes a framework, a locking mechanism, and a tumbler switch. The framework is provided with a receiving cavity, the locking mechanism is disposed in the receiving cavity, the locking mechanism includes two buckles and a driving assembly located between the two buckles, the driving assembly is linked to the tumbler switch on an outer side of the framework, and a limiting lock is disposed on the tumbler switch. According to the present application, the roller skating structure can be more conveniently detached from or mounted onto a sole of a regular shoe, achieving free change between the regular shoe and the roller skate. In addition, the self-locking of the roller skating structure is achieved by the arrangement of the limiting lock, and the use safety of the roller skates is improved.