Six-Pack Cooler

Full-contact cooling.

From the website:
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Six-Pack Cooler

Keeps beverages ice-cold for up to 3 hours!

Curved sections nestle around cans while the compact shape easily fits lunch boxes, coolers, picnic baskets and tote bags.

Just pop the reusable gel-filled pack into freezer for 6-10 hours before use and it’s ready to go when you are!

Ideal for picnics, sports events, camping and more.

Non-toxic and leak-proof.

8-1/2" x 3-3/4" x 2".
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If one is good, think how well three (1 above, 1 below and one in-between two layers of cans) would work.

$7.98 (alas, sodas not included).