I'm looking to buy these for vegas heat (110+). in a coleman 16 quart cooler. would they stay cold 5 hours at least?

I kept 2 of mine in a small lunch cooler under my desk in an air conditioned room and they didn't stay cold for more than 8 hours. Outside in the heat? No way these ice packs are a joke.

Is the volume of "liquid" in each of these small enough to carry on an airplane?

I'm not sure how much the liquid is in the chillers by volume, but I would guess that it is. Though I'm not sure what the rules are when it is in a frozen state since technically, it's no longer a liquid. You'd probably have to check with the TSA on that.

Where are these made?

I have looked all over the ice pack and I could not find where it was made. There are things like :non toxic, do not put in dishwasher, wash only with soapy water. What I did not see was "Made in China". So I really don't know for sure. I have other ice packs that stated they were made in China, so maybe these are not. Sorry that I couldn't be more help.

I see they have what appears to be a cork at the top, can they be refilled?

No - they are not meant to be refilled.

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Bentgo Ice Lunch Chillers - Ultra-Thin Ice Packs Perfect for Everyday Use in Lunch Bags, Lunch Boxes and Coolers - 4 Pack (Blue)

Product ID: 264706757

Details

Age range (description)
36
Brand
Bentgo
Colour
Blue
Material
High Density
Recommended uses for product
School

💪Durable & reusable

⏱️Freezes fast, chills long

❄️Ultra-thin for max space

Description

❄️ Stay cool, stay fresh, and never compromise on space!

VIBRANT SAFE - Bright blue, non-toxic materials ensure safe, stylish cooling every day.
BUILT TO ENDURE - Crafted from high-density polyethylene for leak resistance and long-lasting durability.
SPACE SAVING SLIMNESS - Ultra-thin design fits seamlessly in any lunch bag or cooler, maximizing your food space.
EFFORTLESS MAINTENANCE - Easy to clean with a simple wipe or hand wash—ready for your next adventure.
RAPID CHILL TECHNOLOGY - Freezes quickly and keeps your meals fresh and cool for hours—no soggy snacks here.

The Bentgo Ice Lunch Chillers are ultra-thin, quick-freezing ice packs designed to keep your meals chilled for hours without sacrificing valuable lunch space. Made from durable, leak-resistant, and non-toxic materials, these reusable blue packs are perfect for everyday use in lunch bags, boxes, and coolers.

Specifications

ASIN	B00OH5IVSM
Additional Features	Freezer Safe, Leak Resistant
Age Range Description	36
Best Sellers Rank	#25,555 in Sporting Goods ( See Top 100 in Sporting Goods ) #119 in Camping Cooler Accessories
Brand Name	Bentgo
Closure Type	Zipper
Color	Blue
Customer Reviews	4.7 4.7 out of 5 stars (14,711)
Included Components	Container
Item Dimensions D x W x H	0.8D x 11.4W x 0.8H centimeters
Item Dimensions L x W x H	17L x 11.4W x 6.1H centimeters
Item Form	Bento Boxes
Item Weight	1.7 Pounds
Manufacturer	Bentgo
Material Type	High Density Polyethylene
Material Type Free	BPA Free
Number of Compartments	1
Number of Items	1
Pattern	Solid
Product Care Instructions	Hand Wash Only
Recommended Uses For Product	School
Shape	Leaves
Style Name	Easy To Clean
Theme	Leaves
UPC	885559482725 853975005057 885607859936 796433825166
Unit Count	1 Count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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