From the Oxford online dictionary:
koozie (also coozie) -
NOUN
An insulating sleeve used to keep a canned or bottled drink cold:
‘customers are rushing to snap up beer koozies, T-shirts, and Frisbees plastered with the company's logo’...
- ‘"Probably the most important thing a beer koozie does is not simply insulate the can, but keep condensation from forming on the outside of it."’
....FREE IS GOOD; COLD CAN BE BEST .....
Hopefully, we'll get some reports from those who go the the hobby shop today. I will try to go later if possible.