Products and methods are provided for inflatable structures. In various exemplary embodiments, an inflatable structure is provided with multiple variable chambers including a first variable chamber and a second variable chamber. A first boundary envelope defines the first variable chamber and a second boundary envelope defines the second variable chamber. The first and second boundary envelopes separate the first chamber from the second chamber. The first and second variable chambers are defined by an operative scale that may differ by an order of magnitude between the first and second variable chambers.

A convertible seat including: a support frame; and a user support having a support surface on one side defining a rounded periphery, the user support being movable from a first configuration supported by the support frame with the rounded periphery presented upwardly, to a second configuration supported by the support frame such that a seat or seat base is presented upwardly, the seat or seat base being substantially flat or at least less rounded than the rounded periphery, with the support surface being stowed substantially below the seat or seat base in the second configuration.

The seat allows the attainment in a single unit both the healthy balance/core-strengthening of a fitness chair and a conventional chair.

A convertible seat including: a support frame; and a user support having a support surface on one side defining a rounded periphery, the user support being movable from a first configuration supported by the support frame with the rounded periphery presented upwardly, to a second configuration supported by the support frame such that a seat or seat base is presented upwardly, the seat or seat base being substantially flat or at least less rounded than the rounded periphery, with the support surface being stowed substantially below the seat or seat base in the second configuration.

The seat allows the attainment in a single unit both the healthy balance/core-strengthening of a fitness chair and a conventional chair.

A saddle for an aquatic board is disclosed. The saddle is equipped with a strap or straps and/or edge wise clamps, or other suitably firm fastener, to engage and maintain position on the aquatic board positioned beneath the saddle. A user can then stand on the board and squeeze the saddle between their knees and ankles and maintain an enhanced balance on the board or, if fatigued, can sit or kneel alongside or on the saddle and paddle/ride from a seated or kneeling position. The saddle may be inflatable or solid and may include an inner void for storage for personal effects or equipment. The saddle may further include a speaker, cup holder, handles, or other optional features.

A saddle for an aquatic board is disclosed. The saddle is equipped with a strap or straps and/or edge wise clamps, or other suitably firm fastener, to engage and maintain position on the aquatic board positioned beneath the saddle. A user can then stand on the board and squeeze the saddle between their knees and ankles and maintain an enhanced balance on the board or, if fatigued, can sit or kneel alongside or on the saddle and paddle/ride from a seated or kneeling position. The saddle may be inflatable or solid and may include an inner void for storage for personal effects or equipment. The saddle may further include a speaker, cup holder, handles, or other optional features.

Provided are an inflatable product and an inflatable product fusing process. The inflatable product comprises an upper sheet, a lower sheet, pull straps provided therebetween, and upper and lower fixing sheets having one faces away from each other respectively joined with inner surfaces of the upper and lower sheets and one faces facing towards each other not joined. The pull strap has oppositely-provided upper and lower pull strap sheets of porous material. The upper sheet, upper pull strap sheet, upper fixing sheet, lower fixing sheet, lower pull strap sheet and lower sheet are successively provided. When processing using a hot-fusing machine or high-frequency machine, the upper and lower pull strap sheets are simultaneously jointed with the upper and lower fixing sheets, therefore the inflatable product can be one-step formed and no separating sheet needs to be provided in the pull strap, thus simplifying manufacturing process and improving production efficiency.

Provided are an inflatable product and an inflatable product fusing process. The inflatable product comprises an upper sheet, a lower sheet, pull straps provided therebetween, and upper and lower fixing sheets having one faces away from each other respectively joined with inner surfaces of the upper and lower sheets and one faces facing towards each other not joined. The pull strap has oppositely-provided upper and lower pull strap sheets of porous material. The upper sheet, upper pull strap sheet, upper fixing sheet, lower fixing sheet, lower pull strap sheet and lower sheet are successively provided. When processing using a hot-fusing machine or high-frequency machine, the upper and lower pull strap sheets are simultaneously jointed with the upper and lower fixing sheets, therefore the inflatable product can be one-step formed and no separating sheet needs to be provided in the pull strap, thus simplifying manufacturing process and improving production efficiency.

A support pad comprises a first surface layer, a second surface layer and an airbag structure. The first surface layer is disposed on the first surface of the support pad. The second surface layer is disposed on the second surface of the support pad and connected to the first surface layer. An edge of the first surface layer is connected to an edge of the second surface layer to cover the airbag structure. The airbag structure has a plurality of hollowed portions and a first connecting portion of the first surface layer is connected to a second connecting portion of the second surface layer through a space provided by the hollowed portions.

A support pad comprises a first surface layer, a second surface layer and an airbag structure. The first surface layer is disposed on the first surface of the support pad. The second surface layer is disposed on the second surface of the support pad and connected to the first surface layer. An edge of the first surface layer is connected to an edge of the second surface layer to cover the airbag structure. The airbag structure has a plurality of hollowed portions and a first connecting portion of the first surface layer is connected to a second connecting portion of the second surface layer through a space provided by the hollowed portions.

A beach cart includes a frame mounted on rollers, and a sun shade integrally secured in a non-detachable manner, to at least one other element of the beach cart. The beach cart can also include at least one seat carried by the frame. The seat can be operable between a retracted storage position and a deployed extended use position.