A swimming aid device in the form of a .[.monofi.]. .Iadd.monofin .Iaddend.is contemplated. The swimming aid device may include first and second fins formed of a resilient material, each fin including an elongated internal space within a fin body, an opening leading to the elongated internal space, a fin blade coupled to and extending away from the elongated internal space, a first and second side heel connectors on opposing sides of the opening leading to the elongated internal space and sized and shaped to mate with each other, a fin blade connector and a fin blade connector receiver on the fin blade and sized and shaped to mate with each other, the combination of the first and second fins forming a monofin.

A swim fin or pair of fins, and method of providing omni directional thrust propulsion during a swimmer/users, power cycle relative to range of motion, that may comprise of, elastomeric flexible to rigid and/or composite materials, a leg bracket, accompanied by leg strap, ankle strap, and attaching hardware, a foot pocket comprising a plurality of pressure entrapment orifices, and fixably attached orifice flaps, disposed dorsally about a foot pocket, a fin blade extending outwardly of said foot pocket, comprising a plurality of fin blade orifice, fixably attached orifice flaps disposed about said fin blade. Sockets, with attaching hardware, disposed about the edges of said fin blade, having removably attached articulating socketed and non-socketed jointed members that extend along the medial to lateral edges as well as anteriorly from said fin blade edges, articulating members may include, integral joint sections having separately assembled internal hardwares, along with corresponding removably attached cable/tendon hardware, which is routed from said lower leg bracket, internally through the fin blade body, to the interior of said socket sections, and removably attached to articulating members, outwardly about the swim fin assembly, a swim fin may further include a fixably attached webbing comprising of thin flexible materials, disposed between said articulating members and fin blade edges, for a uniquely improved method of hydrodynamic pressure entrapment, for the advantage of uniquely increased angle of attack propulsion method for a given user in water.

A swim fin or pair of fins, and method of providing omni directional thrust propulsion during a swimmer/users, power cycle relative to range of motion, that may comprise of, elastomeric flexible to rigid and/or composite materials, a leg bracket, accompanied by leg strap, ankle strap, and attaching hardware, a foot pocket comprising a plurality of pressure entrapment orifices, and fixably attached orifice flaps, disposed dorsally about a foot pocket, a fin blade extending outwardly of said foot pocket, comprising a plurality of fin blade orifice, fixably attached orifice flaps disposed about said fin blade. Sockets, with attaching hardware, disposed about the edges of said fin blade, having removably attached articulating socketed and non-socketed jointed members that extend along the medial to lateral edges as well as anteriorly from said fin blade edges, articulating members may include, integral joint sections having separately assembled internal hardwares, along with corresponding removably attached cable/tendon hardware, which is routed from said lower leg bracket, internally through the fin blade body, to the interior of said socket sections, and removably attached to articulating members, outwardly about the swim fin assembly, a swim fin may further include a fixably attached webbing comprising of thin flexible materials, disposed between said articulating members and fin blade edges, for a uniquely improved method of hydrodynamic pressure entrapment, for the advantage of uniquely increased angle of attack propulsion method for a given user in water.

A monofin swimming device comprising a skeleton and an outer shell, wherein the combination attaches to a user's feet to assist in propelling the user through the water.

A monofin swimming device comprising a skeleton and an outer shell, wherein the combination attaches to a user's feet to assist in propelling the user through the water.

In one aspect, the invention provides a swim fin comprising a foldable fin blade and foot enclosure, and means for releasably securing the foot of a user within said foot enclosure when in use for swimming. When not in use for swimming, the fin is collapsed to demonstrate a substantially flat form and releasably interconnected with another such swim fin to form a loop structure that can be worn as a belt or bandolier, or stored flat and carried within a fanny pack. The combination swim fin belt apparatus allows a user to carry a pair of swim fins conveniently, comfortably and unobtrusively while engaging in activities that take place on or near the water. The fins are thus immediately available to be deployed for swimming, in particular when the user unexpectedly needs to swim long distances or in challenging conditions without the aid of water safety devices.

In one aspect, the invention provides a swim fin comprising a foldable fin blade and foot enclosure, and means for releasably securing the foot of a user within said foot enclosure when in use for swimming. When not in use for swimming, the fin is collapsed to demonstrate a substantially flat form and releasably interconnected with another such swim fin to form a loop structure that can be worn as a belt or bandolier, or stored flat and carried within a fanny pack. The combination swim fin belt apparatus allows a user to carry a pair of swim fins conveniently, comfortably and unobtrusively while engaging in activities that take place on or near the water. The fins are thus immediately available to be deployed for swimming, in particular when the user unexpectedly needs to swim long distances or in challenging conditions without the aid of water safety devices.

Disclosed are flippers worn with shoes, including: a fin portion including a body worn on the front of a shin of a user and formed in a plate shape, and an instep seating portion formed to be cut upward from a center of a lower side of the body; one or more bands coupled to a side of the body in a direction perpendicular to a longitudinal direction of the body; and a pair of first fastening devices each coupled to both ends of the band to be fastened with each other.

Disclosed are flippers worn with shoes, including: a fin portion including a body worn on the front of a shin of a user and formed in a plate shape, and an instep seating portion formed to be cut upward from a center of a lower side of the body; one or more bands coupled to a side of the body in a direction perpendicular to a longitudinal direction of the body; and a pair of first fastening devices each coupled to both ends of the band to be fastened with each other.

An apparatus for putting on flippers including means for retaining a user's foot inside a shoe of the flipper, the retaining means being mechanically connected to means for connection to the shoe of the flipper, the retaining means also being pivoted to the connection means by a hinge, the apparatus being characterised in that it comprises means for adjusting the mutual position between the retaining means and the connecting means for adapting the apparatus to the foot of the user.