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.

4.6/5

Product ID: 54075173

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Details

Brand
Cooler Shock
Color
Silver
Material
Nylon
Package Information
Box
Product Dimensions
1"D x 6.5"W x
Item Weight
0.6 Pounds

🎒Compact 5x7 inch size

🧊Reusable & easy fill

❄️Coldest at 18°F (-8°C)

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

❄️ Stay Frosty, Stay Ahead: The Ultimate Chill Companion

DURABLE NYLON ARMOR - Reinforced with tough nylon for long-lasting performance on every adventure.
ALL DAY ARCTIC CHILL - Keeps your food and drinks colder than ice at a frosty 18°F (-8°C) for hours on end.
ESSENTIAL OUTDOOR GEAR - A must-have for camping, fishing, road trips, and beach days—never compromise on freshness.
EFFORTLESS FREEZE USE - Fill once with included funnel, freeze, and enjoy hassle-free cooling anytime.
PERFECTLY PORTABLE SIZE - Slim 5x7 inch packs fit seamlessly into lunch boxes, coolers, and backpacks.

Cooler Shock Reusable Ice Packs deliver superior cooling power at 18°F (-8°C), crafted with durable nylon and polyethylene insulation. Compact and portable, these 5x7 inch packs are easy to fill with the included funnel and designed to keep your food and drinks fresh all day—perfect for professional millennials balancing work, travel, and outdoor adventures.

Specifications

Brand	Cooler Shock
Color	Silver
Material	Nylon
Package Information	Box
Product Dimensions	1"D x 6.5"W x 7.5"H
Item Weight	0.6 Pounds
Special Feature	Portable
Included Components	funnel
Model Name	Ice Packs
Product Care Instructions	Freeze when not in use
Insulation Material	Polyethylene
Chamber Depth	6.5 Inches
UPC	854850006251
Size	Lunch Box Size 5-Pack
Manufacturer	Cooler Shock
Item Package Dimensions L x W x H	8.7 x 8.23 x 2.09 inches
Package Weight	0.32 Kilograms
Item Dimensions LxWxH	6.5 x 7.5 x 1 inches
Brand Name	Cooler Shock
Number of Items	5
Part Number	43237-2
Style	Lunch Box Size 5-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?

Common Questions

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