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.

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

Q: 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.

Q: 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.

Q: 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.

Product ID: 41205888

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Details

Brand
Cooler Shock
Color
Gray
Material
Ice Packs
Package Information
Bag
Capacity
8 Mils
Product Dimensions
10"D x 14"W x

🎒Slim & portable design

💪Nylon-reinforced durability

❄️48-hour lasting cold

Frequently Bought Together

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

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Cool Coolers by Fit + Fresh Slim Compact Reusable XL Ice Pack, Perfect for Lunch Boxes, Coolers, and Beach Bags

Description

❄️ Chill smarter, adventure longer — don’t let your cooler miss out!

MAXIMIZE COOLER SPACE - Large 10x14 inch size replaces 5-6 lbs of ice, freeing up room for more food and drinks.
EFFORTLESS ONE TIME PREP - Fill once with included funnel, freeze, and reuse endlessly—perfect for busy pros on the go.
STAY CHILL TWICE AS LONG - Keeps your cooler contents icy cold for up to 48 hours—no more soggy mess or frequent refills.
THE ULTIMATE OUTDOOR SIDEKICK - Ideal for camping, fishing, hiking, or beach days—because your gear deserves premium cooling power.
BUILT TOUGH FOR EVERY ADVENTURE - Nylon-reinforced exterior means these packs withstand rugged outdoor use without leaks or tears.

Cooler Shock Reusable Ice Packs deliver up to 48 hours of superior cooling with a durable nylon-reinforced design. Sized at 10x14x1.5 inches, each pack replaces 5-6 lbs of traditional ice, maximizing cooler space for food and drinks. Easy to fill once and endlessly reusable, these slim, portable packs are perfect for camping, fishing, hiking, and beach trips, making them an essential upgrade for any outdoor enthusiast.

Specifications

Brand	Cooler Shock
Color	Gray
Material	Ice Packs
Package Information	Bag
Capacity	8 Mils
Product Dimensions	10"D x 14"W x 1.5"H
Item Weight	0.2 Kilograms
Special Feature	Portable
Included Components	無し
Recommended Uses For Product	Camping, Fishing, Hiking
Model Name	繰り返し使用可 -7.8℃をキープ
Pattern	Letter Print
UPC	854850006121
Manufacturer	GenTap
Item Package Dimensions L x W x H	10.59 x 7.68 x 2.13 inches
Package Weight	0.62 Kilograms
Item Dimensions LxWxH	10 x 14 x 1.5 inches
Brand Name	Cooler Shock
Part Number	7CSLSET
Style	Cooler Size 3-pack

Have a Question? See What Others Asked

How long do these stay frozen for ?

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.

Are these reusable?

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

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