The swimming fin for the disabled includes a flipper pivotally attached to a lower end of a post, the post having a handle on the end opposite the flipper. A strap is pivotally attached to a middle section of the post for securing the post to a user's leg. A user attaches the device to themselves by inserting their foot in the flipper, connecting the strap to their leg, and gripping the handle. When in the water, pushing the handle out from a user's chest and then pulling the handle back to the chest will cause a motion in the user's leg similar to a leg kick, thus allowing a user with limited or no function in their legs to propel him/herself in the water.

An improved structure of swimming equipment includes a swim fin shoe body, a holder, an assembling slot and a straight swim fin board. Two ends of the swim fin shoe body are provided with a tip and a heel respectively. The tip of the swim fin shoe body extends at an angle towards the front and underside of the swim fin shoe body to form the holder, and the front end of the holder is provided with the assembling slot. Two ends of the straight swim fin board are provided with a paddling section and a detachable assembling section assembled in the assembling slot. The assembling section and paddling section form a straight pattern jointly, so that the straight swim fin board tilts towards the front and underside of the swim fin shoe body along with the holder.

The invention is a semi-rigid adjustable diving foot pocket with a clamping system to allow simple attachment and detachment of a multitude of various flippers/blades. This foot pocket is adjustable to the foot and is semi-rigid to allow partial medial rotation, but very limited lateral rotation. The flippers secured to the foot-pocket by a system utilizing clamping pressure to hold the flipper in place. This system allows for the flipper to be attached and detached easily, with no damage occurring to either the invention or the flipper.

A mono-fin for swim training is disclosed. The mono-fin has two separated boot structures that from two separate foot cavities for holding feet with toes positioned in front regions of each of the boot structures and heels positioned at back regions of each of the boot structures. The mono-fin has a mono-fin structure connecting the boot structure through the front regions of each of the boot structures. In a middle region of the mono-fin structure and between the front regions of the boot structures, there is flex region. The flex region allows angles between the boot structures and distances between the back regions of the boot structures to be changed by a swimmer while swim training.

The system is configured as a modified swimming shoe with integrated support for collapsible fins positioned above the arch for short fins or above the arch and at the back of the swimming shoe to accommodate bigger fins. The system allows for maximum thrust during the power stroke while the resistance during the return stroke is no different from that of a barefoot swimmer due to the fins' passively switching to the collapsed position that closely mimics the dimensions of the foot. The resulting net efficiency of the propulsion thrust is much greater, and the complete movement (power stroke and return stroke) requires less energy and oxygen consumption. Collapsible fins offer greatly enhanced maneuverability by allowing abruptly changing direction and speed. The collapsible wrist fins further increase the efficiency of swimming while allowing the hand to remain free for other tasks.

A flipper device that provides a swimmer with functional use of the flipper when fully assembled, and easy, convenient use of same when the swimmer desires to walk in the flipper. In embodiment, the flipper device includes a fin positionable in (i) a swimming orientation in which the fin is configured to aid a swimmer in moving through water, and (ii) a storage orientation in which the fin is configured to be stored differently than in the swimming orientation, wherein the fin is constructed and arranged to be (a) at least partially collapsed in size to a side of the fin when converted from the swimming orientation to the storage orientation, and (b) secured in the storage orientation while collapsed in size to the side when not being used by the swimmer.

A swim fin includes a blade and a foot pocket separate from the blade that can be coupled and released. The blade extends in a rearward direction Y2 at both side portions of a rear end of the blade, and has both coupling arms spaced apart in a lateral direction X and both first transverse engaging portions positioned on mutually faced inner surfaces of both coupling arms. A first intermediate engaging portion is positioned between both transverse engaging portions. The foot pocket has both second transverse engaging portions positioned on both side portions of a front end of the foot pocket and detachably engaged with both first transverse engaging portions. A second intermediate engaging portion is detachably engaged with the first intermediate engaging portion.

A diving fin system is provided. The fin system includes without limitation a collapsible, leg mounted diving fin. The fin system includes a first section mounted to lower leg and a second section and a third section that can collapse up to and around the lower leg. When collapsed, it can have a very low profile such that it looks like a slightly wider version of the calf area of the leg. It can be also be a three-piece deploying fin, wherein the first section is maintained coupled to the lower leg, the second section slides and rotates to couple to the top of a foot and the third section rotates away from the second section to form the fin blade for use in diving, such as scuba diving.

A swim fin includes a blade and a foot pocket separate from the blade that can be coupled and released. The blade extends in a rearward direction Y2 at both side portions of a rear end of the blade, and has both coupling arms spaced apart in a lateral direction X and both first transverse engaging portions positioned on mutually faced inner surfaces of both coupling arms. A first intermediate engaging portion is positioned between both transverse engaging portions. The foot pocket has both second transverse engaging portions positioned on both side portions of a front end of the foot pocket and detachably engaged with both first transverse engaging portions. A second intermediate engaging portion is detachably engaged with the first intermediate engaging portion. Each engagement state is retained by fastening of a fastening element.

The invention is a semi-rigid adjustable diving toot pocket with a damping system to allow simple attachment and detachment of a multitude of various flippers/blades. This foot pocket is adjustable to the foot and is semi-rigid to allow partial medial rotation, but very limited lateral rotation. The flippers secured to the foot-pocket by a system utilizing clamping pressure to hold the flipper in place. This system allows for the flipper to be attached and detached easily, with no damage occurring to either the invention or the flipper.