A prefabricated shoe construction is disclosed which includes upper and lower mid-sole members which carry mating slots and hooks permitting the sole assembly to be easily assembled. A bottom sole is also provided having, on its upper surface, spaced-apart recesses located at the periphery of the bottom sole and located respectively to each of the slots to thusly firmly engage and house within such recesses each respective hook as it is inserted into and through each corresponding slot of the lower mid-sole member. When the bottom sole of the shoe has been excessively worn, the same may be readily replaced by the user, employing the detachable mating slots and hooks to replace the sole, without need for skilled labor.

A shoe with replaceable vamp and insole consists of an outsole, an insole, a vamp and a plurality of anchor blocks. The outsole and insole have respectively anchor bores and anchor struts to attain replacement function. The outsole has housing chambers for holding the anchor blocks and a storing chamber for storing a dismantle tool. The anchor block has a wedge trough to engage with a latch section of the vamp to allow the vamp be replaced as desired.

The interchangeable upper of the disclosed footwear includes a foot covering adhesively secured to an insole molded of relatively flexible, shock-absorbent material to a desired shape, size and thickness, and having a narrow shoulder surrounding its upper surface. This insole is received in a one-piece outsole molded from a material having memory, so as to always seek to return to its original molded shape, which has a bottom corresponding in size and shape to the insole which is surrounded by an upstanding wall having a height which corresponds to the thickness of the insole and a narrow lip extending inwardly from its upper edge. During molding, the bottom may be made flat or, alternatively, the portion of the bottom from the heel to the widest part of the foot may be made flat and the portion forward thereof gently curved upwardly from the plane of the flat portion. The lip on the outsole mechanically engages the shoulder on the insole, and because the outsole attempts to return to its molded shape any tendency of the outsole to gap at the upper edge with stepping movement is essentially prevented. The material of the outsole is sufficiently elastic to secure insole and outsole together, yet to be stretched the small amount necessary to release the lip from the shoulder for removal of the outsole.

A universal footwear includes removable cleats employable during indoor and outdoor activities such as sports, for example. The footwear includes a sole having toe, arch and heel portions respectively. Such a toe portion is provided with a plurality of receptacles, the arch portion includes a gel pack, and the heel has a bottom surface provided with a plurality of receptacles spaced thereabout. The apparatus further includes a body secured to the sole and a plurality of traversing straps extending thereacross for assisting to maintain an operator's foot at a stable position. A plurality of cleats are provided and are removably engageable with said plurality of receptacles, as desired by a user. One pair of shoes can be used for more than one sport thereby allowing a user to attach cleats to the shoe for any sport or remove all cleats from the shoe for casual wear.

An article of footwear is disclosed that includes upper and a sole structure. The upper defines an interior void that is configured to receive the sole structure and a foot. A lower surface of the upper defines a plurality of apertures, and the sole structure includes a plurality of projections that extend through the apertures to form a ground-engaging surface. The projections are connected to a foot-supporting member that remains within the upper. A locking system is incorporated into the upper and sole structure to secure the sole structure to the upper.