Minimal ice pack for cans
Canned beverages that quickly become slimy in the summer. I found an ice pack that could be easily dealt with at the 300 yen shop "3COINS", so I tried it.
Drink ice pack "Cool Keeper"
A round ice pack with a diameter of 6.6 cm and two silicon bands are included for 300 yen (excluding tax). Before use, chill in the freezer for at least 6 hours and secure it to the bottom of the can with a silicone band before use. Since it swells, it wobbles a little when placed on the table, but it did not fall or fall while drinking.
A set of small ice packs and bands
Compatible with cans with a diameter of 66 mm
Fix it with a band from above and you're done. It's easier to attach the band to the ice pack first.
Even if you drink it as it is, it will not fall off
When I left it at room temperature for more than 1 hour, the temperature of the drink, which was about 5 degrees, rose to 12 degrees, but when I drank it, it still felt "cold". Normally, the contents will decrease, so it is efficient to cool only the bottom.
One hour on the right, the bottom was a little colder
If you put only the ice pack in a commercially available PET bottle cover, you can use it to keep the PET bottle cold. You can't expect the same cold insulation effect as a vacuum insulation tumbler, but it's compact and easy to carry, so it seems useful to have one!
Perfect for the bottom of PET bottle covers
Colder lasts longer than putting it in as it is