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A cooler includes a main body which includes a base, an upper rim, and one or more cooler walls extending therebetween. The cooler in some embodiments further includes a removable wheel assembly which includes two coaxial wheels, and an axle. The two coaxial wheels are removably securable to the axl

A cooler includes a main body which includes a base, an upper rim, and one or more cooler walls extending therebetween. The cooler in some embodiments further includes a removable wheel assembly which includes two coaxial wheels, and an axle. The two coaxial wheels are removably securable to the axle. The cooler still further comprises a wheel fastening system configured to secure the removable wheel assembly to the base of the main body which includes a mount, a clip hingedly connected to the mount, and a locking clasp configured to lock the clip into a closed position to secure the wheel assembly. The cooler yet further comprises a lid including two wheel storage recesses, each being sized and dimensioned to receive and retain one of the coaxial wheel of the wheel assembly, and an axle storage recess sized and dimensioned to receive and retain the axle of the wheel assembly.

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1. A cooler having wheels, comprising: (a) a main body including a base, an upper rim, and one or more cooler walls extending therebetween;(b) a removable wheel assembly; and(c) a wheel fastening system configured to secure the removable wheel assembly to the base of the main body;(d) wherein said o

1. A cooler having wheels, comprising: (a) a main body including a base, an upper rim, and one or more cooler walls extending therebetween;(b) a removable wheel assembly; and(c) a wheel fastening system configured to secure the removable wheel assembly to the base of the main body;(d) wherein said one or more cooler walls comprises an inner collapsible wall that extends between and is attached to the base and the upper rim;(e) wherein said one or more cooler walls comprises an outer collapsible wall that extends between and is attached to the base and the upper rim;(f) wherein each of said inner and outer collapsible walls comprises a flexible elastomeric membrane that includes a plurality of hinge lines at which the membrane is configured to bend such that the membrane is transitionable between a respective collapsed configuration and a respective expanded configuration;(g) wherein, when the inner and outer collapsible walls are in their respective expanded configurations, the outer collapsible wall surrounds the inner collapsible wall such that the inner and outer collapsible walls define an intermediate space therebetween for insulating the interior storage space from an exterior of the cooler;(h) wherein the cooler is transitionable between an expanded configuration for use of the cooler, and a collapsed configuration during nonuse of the cooler, by bending of said membranes of the inner and outer collapsible walls along said respective hinge lines, each of said expanded and collapsed configurations corresponding to a stable configuration of the cooler;wherein the hinge lines are defined in the membranes regardless of whether the cooler is in the expanded configuration or the collapsed configuration;(j) wherein the cooler further comprises one or more openings in the upper rim through which access is provided to the intermediate space defined between the inner and outer collapsible walls, and which cause the intermediate space to be open to external air flow, when the one or more openings are uncovered;(k) wherein each of the flexible elastomeric membranes is self supporting such that the cooler can remain in the expanded configuration even when the one or more openings in the upper rim are uncovered;wherein the wheel fastening system includes a mount, a clip hingedly connected to the mount, and a locking clasp configured to lock the clip into a closed position to secure the wheel assembly. 2. The cooler having wheels of claim 1, wherein the cooler further includes a lid. 3. The cooler having wheels of claim 2, wherein the lid includes one or more recesses configured to receive components of the wheel assembly. 4. The cooler having wheels of claim 2, wherein the lid includes one or more recesses configured to receive and retain components of the wheel assembly. 5. The cooler having wheels of claim 2, wherein the lid includes two wheel storage recesses, each being configured to receive and retain a wheel of the wheel assembly, and an axle storage recess configured to receive and retain an axle of the wheel assembly. 6. The cooler of claim 1, wherein the cooler further includes a telescoping handle. 7. The cooler of claim 6, wherein the handle is removably attachable to the base. 8. The cooler of claim 1, wherein the cooler includes a handle that is removably attachable to the base. 9. The cooler of claim 8, wherein the cooler includes a lid having a handle storage recess for storage of the handle. 10. The cooler having wheels of claim 1, wherein the base includes a u-shaped channel sized and dimensioned to correspond to an axle of the removable wheel assembly.