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 4 Mid Size Freeze Packs Screw Cap (10in x 9in)

Cooler Shock 4 Mid Size Freeze Packs Screw Cap (10in x 9in)

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: 260540984

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Details

Brand
Cooler Shock
Colour
Blue
Material
Polyethylene
Package information
Bag
Capacity
2 Liters

♻️Reusable for life

❄️18°F burst cooling

🇺🇸Made in USA

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

Titan Deep Freeze Cooler Zipperless Hardbody Cooler - Deep Freeze Insulation, HardBody Liner, and SmartShelf

Cooler Shock Ice Packs for Cooler - Reusable, Premium, Large Ice Pack and Lunch Cooler Set for Long Term Use - Cools Faster Than Ice - Cooler Accessories

Description

❄️ Chill Out with Cooler Shock - Your Ultimate Cooling Companion!

STAY COOL LONGER - Experience slushy cold for up to 48 hours!
PROVEN PERFORMANCE - Trusted since 2013, Cooler Shock is the original!
HYDRATION MADE EASY - Just add water to activate and save on ice!
ULTIMATE FLEXIBILITY - 8 mil thick, flexible design adapts to any cooler.
ECO FRIENDLY INNOVATION - Non-toxic, food-safe materials for peace of mind.

The Cooler Shock4 Mid Size Freeze Packs are designed to keep your items slushy cold for up to 48 hours. Weighing 2 lbs and made from non-toxic materials in the USA, these gel packs feature a unique burst cooling technology that activates at 18°F. Fully reusable and easy to hydrate, they are the perfect eco-friendly alternative to traditional ice.

Specifications

Brand	Cooler Shock
Model Number	CS MID Screw Cap …
Color	Blue
Product Dimensions	25.4 x 2.54 x 25.4 cm; 340.19 g
Capacity	2 Liters
Material	Polyethylene (PE)
Special Features	Non Toxic
Item Weight	340 g

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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