An apparatus configured to extend onto and retract from a body of water a flotation mat. The apparatus includes first and second spaced apart support members such that both support members include an upper and a lower end. The spaced apart support members are secured to a boat dock by mounting hardware. First and second vertically slidable members are slidably mounted to the first and second spaced apart support members. The apparatus also includes a rotatable shaft that extends between the upper ends of the first and second slidable members. A sprocket assembly is mounted to one of the ends of the rotatable shaft to facilitate either manual or powered rotation of the shaft for purposes of extending or retracting the mat onto or off the body of water.

An exercise mat comprising: at least one top layer comprising polyurethane, at least one bottom layer, and at least one middle layer disposed between the at least one top layer and the at least one bottom layer,.

An exercise mat comprising: at least one top layer comprising polyurethane, at least one bottom layer, and at least one middle layer disposed between the at least one top layer and the at least one bottom layer,.

An exercise rack enclosure system for providing an exercise rack which is concealable within an enclosure. The exercise rack enclosure system generally includes an enclosure including an interior space. An exercise rack is pivotably connected to the enclosure within the interior space. The exercise rack is adjustable between a collapsed position, in which the exercise rack is completely positioned within the interior space of the enclosure, and an extended position, in which the exercise rack extends out of the interior space of the enclosure for use. The enclosure may optionally include one or more doors for concealing the interior space and exercise rack when not in use. Various attachments may be stored in the enclosure and removably connected to the exercise rack for performing a wide range of exercise moves.

The present invention provides a method for manufacturing a cushion body with a concave-convex structure and a mold for manufacturing the cushion body with the concave-convex structure. A first elastic sheet is pasted on a second elastic sheet. The first elastic sheet is a closed-hole elastic material. The second elastic sheet is an opened-hole elastic material. The first elastic sheet and the second elastic sheets are combined and heated. Finally, the first elastic sheet and the second elastic sheet that are heated are sucked using the mold under a negative pressure from one side of the second elastic sheet and cooled at the same time, so that the first elastic sheet and the second elastic sheet can be deformed using the concave-convex structure of the mold and cooled to be shaped, thereby obtaining the cushion body with the concave-convex structure.

An exercise rack enclosure system for providing an exercise rack which is concealable within an enclosure. The exercise rack enclosure system generally includes an enclosure including an interior space. An exercise rack is pivotably connected to the enclosure within the interior space. The exercise rack is adjustable between a collapsed position, in which the exercise rack is completely positioned within the interior space of the enclosure, and an extended position, in which the exercise rack extends out of the interior space of the enclosure for use. The enclosure may optionally include one or more doors for concealing the interior space and exercise rack when not in use. Various attachments may be stored in the enclosure and removably connected to the exercise rack for performing a wide range of exercise moves.

Dropping a weight onto a weight lifting drop bag allows a weight lifter to drop a weight onto a floor with minimal damage to the floor, with minimal noise, and without any bouncing of the weight. The bag is a flexible enclosure filled with resilient pellets. The bag has a generally flat or slightly concave upper surface, a length of about two to eight feet, a width of about one and one-half to four feet, and a height of about two to twelve inches.

An exercise mat comprising: at least one top layer comprising polyurethane, at least one bottom layer, and at least one middle layer disposed between the at least one top layer and the at least one bottom layer.

An exercise mat comprising: at least one top layer comprising polyurethane, at least one bottom layer, and at least one middle layer disposed between the at least one top layer and the at least one bottom layer.

Anti-slip coverings for underlying surfaces are shown and described. The anti-slip coverings include a layer made of a semi-flexible material that is configured to receive contact from an object and has slits at least partially extended through the layer. The layer includes a cut-out pattern comprised of a plurality of cut outs cooperatively aligned with the slits to enable the slits to at least partially open when one or more of a downward force and a horizontal force is applied by the object onto the anti-slip covering. In some examples, the anti-slip covering includes a second layer disposed between the first layer and the underlying surface to allow compression of the first layer when a downward force is applied on the anti-slip covering.