How long do these stay frozen for ?

Mine have stayed frozen for approximately 9-10 hrs. I left food in the cooler,which was well-insulated, and it which was still cold when I got home. This was kept in office setting with temps in room in the 70’s.

When you say that this item is colder than ice, what does that mean? ice can be cooled to any temperature unless i'm mistaken. a rock can be 18*f.

Karæthon's answer is correct. Freezing or melting overcomes the "latent heat of fusion" which is about the same heat as is required to raise the temperature of (for example) liquid water by almost 80°F, or frozen water (ice) by about 150°F. So an ice pack in a cooler will spend most of its time at it's melting point. Once it's all melted, the subsequent temperature rise will be very quick.

They are reusable. There is an initial "just add water" setup to change the dry powder to gel, then you throw them in the freezer for several hours and they are ready for use.

If I were to use two of these together, would I have similar cooling capacity as one of the medium-sized packs?

Not positive of that but I am amazed at how well these things work. 4 of them keeps a large cooler super cold.

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Cooler Shock Reusable Ice Packs for Cooler - Long Lasting Cold Freezer Packs for Coolers and Lunch Boxes - Cooler Ice Packs for Camping Gear, Fishing, Road Trips, Beach Must Haves

Cooler Shock Reusable Ice Packs for Cooler - Long Lasting Cold Freezer Packs for Coolers and Lunch Boxes - Cooler Ice Packs for Camping Gear, Fishing, Road Trips, Beach Must Haves

Product ID: 41205888

Details

Brand
Cooler Shock
Color
Gray
Item Weight
1 pounds
Material
Add Water
Package Information
Bag
Pattern
Letter Print

🎒Slim & portable design

💪Nylon-reinforced durability

❄️48-hour lasting cold

B/.145

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Sold byAmazon PanamaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

❄️ Chill smarter, adventure longer with Cooler Shock!

SLIM FIT MAXIMUM SPACE - Thin 1.5" profile fits perfectly in XL coolers, leaving more room for your essentials.
STAY CHILL TWICE AS LONG - Keeps your food and drinks cold up to 48 hours—no more soggy ice mess!
ONE TIME FILL ENDLESS REUSE - Easy fill with included funnel—freeze once, reuse forever for eco-friendly convenience.
YOUR ULTIMATE OUTDOOR SIDEKICK - Perfect for camping, fishing, road trips, and beach days—never compromise on freshness.
BUILT TOUGH FOR EVERY ADVENTURE - Nylon-reinforced packs replace 5-6 lbs of ice, saving space and boosting durability.

Cooler Shock Reusable Ice Packs deliver up to 48 hours of superior cold retention with a durable nylon-reinforced design. Sized at 14"x10"x1.5", these slim, reusable packs replace bulky ice, maximizing cooler space for food and drinks. Ideal for camping, fishing, and travel, they’re easy to fill once and built to last, making them an essential gear upgrade for any outdoor enthusiast.

Specifications

ASIN	B06XH9GB75
Additional Features	Portable
Best Sellers Rank	#244 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #9 in Camping Cooler Accessories
Brand Name	Cooler Shock
Chamber Depth	10 inches
Chamber Height	10 inches
Chamber Width	10 inches
Color	Gray
Container Type	Bag
Customer Reviews	4.6 4.6 out of 5 stars (8,512)
Insulation Material Type	Polyethylene
Item Dimensions D x W x H	1"D x 14"W x 10"H
Item Weight	1 pounds
Manufacturer	GenTap
Manufacturer Part Number	7CSLSET
Material Type	Add Water
Model Number	7CSLSET
Number of Items	3
Pattern	Letter Print
Recommended Uses For Product	Camping, Fishing, Hiking
Size	14"x10"x1.5"
UPC	854850006121

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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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B/.145

Duties & taxes included

In stock

Sold byAmazon PanamaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Panama.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Great price for an authentic product. Fast international shipping too!

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