A swimming flipper (1) comprising a foot portion (2) and substantially flat blade portion (3) extending there from, said blade portion (3) having provided on each longitudinal side thereof at least two opposed rails (4/5) extending inwardly and at an angle equal to or less than 90 degrees to the plane of said blade portion (3), and said blade portion (3) having provided at least two ridges (7/8) preferably underneath the blade portion (3) extending longitudinally from the foot portion (2), said foot portion (2) having provided a one-piece strap (6), and said foot portion (2) having provided at least two fixed couplings (11/12) to engage and disengage with the corresponding and opposing couplings of another said flipper portion (1) to interlock and hold two flippers attached to each other.

A swimming flipper (1) comprising a foot portion (2) and substantially flat blade portion (3) extending there from, said blade portion (3) having provided on each longitudinal side thereof at least two opposed rails (4/5) extending inwardly and at an angle equal to or less than 90 degrees to the plane of said blade portion (3), and said blade portion (3) having provided at least two ridges (7/8) preferably underneath the blade portion (3) extending longitudinally from the foot portion (2), said foot portion (2) having provided a one-piece strap (6), and said foot portion (2) having provided at least two fixed couplings (11/12) to engage and disengage with the corresponding and opposing couplings of another said flipper portion (1) to interlock and hold two flippers attached to each other.

The invention is directed to improve the body alignment in the water of a swimmer. The head band sits on the back of the head allowing the rod to extend down the back to between the shoulder blades. This limits two motions that are undesirable for efficient swimming of the crawl stroke: inappropriate lifting of the head from the neck and over rotating the neck. This lowered neck position and limited neck rotation forces the swimmer to rotate more from the torso in order to clear the water with their mouth and breath and keep the swimmer in an improved body position.

The invention is directed to improve the body alignment in the water of a swimmer. The head band sits on the back of the head allowing the rod to extend down the back to between the shoulder blades. This limits two motions that are undesirable for efficient swimming of the crawl stroke: inappropriate lifting of the head from the neck and over rotating the neck. This lowered neck position and limited neck rotation forces the swimmer to rotate more from the torso in order to clear the water with their mouth and breath and keep the swimmer in an improved body position.

In one aspect, there is provided a floating game, comprising a plurality of game markers that are floatable in water, and a game pad. The game pad is sufficiently floatable in water to support a plurality of humans thereon. The game pad includes a first side and a second side that face away from one another. At least one of the first side and the second side includes indicia shaped based on the plurality of game markers. The game pad is flexible and conforms in shape based on a surface of the water. The game pad is positionable in a storage state in which the game pad, and in a use state. The game pad is more compact in the storage state than in the use state.

A carbon dioxide absorber for a rebreathing system can be connected to a connection head of the rebreathing system in a simple manner. A centering device (43, 44, 45, 46), provided in the area of a guide plate (40) of the absorber (4), can be caused to mesh with centering pins pointing in the direction of the absorber from the connection head.

A swim aid device comprising a belt having a hoop portion including a first tab and a second tab, a front end and a back end opposite said front end wherein the back end includes an opening and wherein the belt is biased in a first closed position and operatively openable to a second open position; and one or more buoyant elements couplable to said back end of the belt and securable in place with said tabs wherein a buoyancy of the one or more buoyant elements allows a user to remain afloat.

A floatation device is provided. In some embodiments, a floatation device is provided, comprising an inflatable ring composed of a transparent material, wherein the inflatable ring includes: an outer air chamber having a first valve for inflating the outer air chamber; an inner air chamber having a second valve for inflating the inner air chamber, wherein the outer air chamber and the inner air chamber are not in communication; a cut through the outer air chamber and the inner air chamber of the inflatable ring that forms opposing ends of the inflatable ring; and a plurality of fasteners placed on a top surface and a bottom surface of the outer or inner air chamber for detachably connecting the opposing ends of the inflatable ring.

A floatation device is provided. In some embodiments, a floatation device is provided, comprising an inflatable ring composed of a transparent material, wherein the inflatable ring includes: an outer air chamber having a first valve for inflating the outer air chamber; an inner air chamber having a second valve for inflating the inner air chamber, wherein the outer air chamber and the inner air chamber are not in communication; a cut through the outer air chamber and the inner air chamber of the inflatable ring that forms opposing ends of the inflatable ring; and a plurality of fasteners placed on a top surface and a bottom surface of the outer or inner air chamber for detachably connecting the opposing ends of the inflatable ring.

A waist tethered buoy assembly tethers to a waist belt worn during water activities. The assembly includes a shell defining an interior space wherein the shell is buoyant. A net is positioned around the shell. A cord is coupled to the net securing the net around the shell. A tether has a net end net end coupled to the cord wherein the tether is coupled to the net. A belt is configured for securing around a waist of a user. A belt end of the tether is coupled to the belt such that the shell is configured to be attached to the user.