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A cooling collar for cooling beverages, comprising separable cooling shells that each contains a cooling material and a cavity that approximates the size of a standard beer or soda can. In preferred embodiments the cooling material is present in sufficient quantity to cool a standard beverage can fr

A cooling collar for cooling beverages, comprising separable cooling shells that each contains a cooling material and a cavity that approximates the size of a standard beer or soda can. In preferred embodiments the cooling material is present in sufficient quantity to cool a standard beverage can from room temperature to about 45째 F. in no more than 30, 25 or even 22 minutes, and to cool at least 24, 35 or even 50 cans without refreezing the collar.

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What is claimed is: 1. A cooling collar for cooling a beverage in a beverage container, the cooling collar comprising a cooling material, and having at least one split formed therein that facilitates reconfiguration by which at least one dimension of the cooling collar is reduced, wherein the split

What is claimed is: 1. A cooling collar for cooling a beverage in a beverage container, the cooling collar comprising a cooling material, and having at least one split formed therein that facilitates reconfiguration by which at least one dimension of the cooling collar is reduced, wherein the split cuts across an end of the beverage container. 2. The cooling collar of claim 1, wherein the split defines first and second portions that enclose the cooling material. 3. The cooling collar of claim 2, where at least one of the first and second portions includes a cavity that conforms to an external shape of a standard beer or soda can. 4. The cooling collar of claim 3, wherein at least one of the first and second portions comprises a polyethylene shell. 5. The cooling collar of claim 3, wherein the cooling material comprises eutectic gel crystals. 6. A cooling collar for cooling beverages, the cooling collar comprising a cooling material, and having at least one split formed therein that facilitates reconfiguration by which at least one dimension of the cooling collar is reduced; wherein at least one of the first and second portions includes a cavity that conforms to an external shape of a standard beer or soda can; and wherein the first portion is coupled to the second portion via a hinge. 7. The cooling collar of claim 3, wherein the first portion is attachable to the second portion via a latch. 8. The cooling collar of claim 3, wherein the first portion has an overall shape that is substantially identical to the second portion. 9. The cooling collar of claim 3, wherein the first portion and the second portions have a thickness between outer and inner walls of between approximately 0.25 inch and approximately 1 inch. 10. The cooling collar of claim 3, wherein the first portion and the second portion have a thickness between outer and inner walls of approximately 0.75 inch. 11. The cooling collar of claim 2, wherein the first portion and the second portion cooperate to at least partially enclose a plurality of beverage containers. 12. The cooling collar of claim 2, wherein the first portion and the second portion cooperate to at least partially enclose 2 beverage containers. 13. The cooling collar of claim 2, wherein the first portion and the second portion cooperate to at least partially enclose 4 beverage containers. 14. The cooling collar of claim 2, wherein the first portion and the second portion cooperate to at least partially enclose 6 beverage containers. 15. The cooling collar of claim 2, wherein the first portion and the second portion cooperate to at least partially enclose 8 beverage containers. 16. A cooling collar for cooling beverages, the cooling collar comprising a cooling material, and having at least one split formed therein that facilitates reconfiguration by which at least one dimension of the cooling collar is reduced, wherein the split defines first and second portions that enclose the cooling material, and wherein the cooling material is present in sufficient quantity to cool a standard beverage can from room temperature to about 45째 F. in no more than 30 minutes. 17. The cooling collar of claim 2, wherein the cooling material is present in sufficient quantity to cool a standard beverage can from room temperature to about 45째 F. in no more than 25 minutes. 18. The cooling collar of claim 2, wherein the cooling material is present in sufficient quantity to cool at least 24 standard beverage cans from room temperature to about 45째 F. without refreezing the collar. 19. The cooling collar of claim 2, wherein the cooling material is present in sufficient quantity to cool at least 35 standard beverage cans from room temperature to about 45째 F. without refreezing the collar.