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.

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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
Gel
Package information
Bag
Capacity
2 Liters

⏳24-48 hrs lasting chill

♻️fully reusable gel pack

❄️18°F ultra-cold temp

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

Arctic Zone Titan Deep Freeze Cooler - Zipperless Hardbody Cooler - Small & Large Capacity- Beach & Camping Cooler - Deep Freeze Insulation, HardBody Liner, and SmartShelf

Cool Coolers by Fit + Fresh, Reusable & Long-Lasting Slim Ice Packs, Cold Packs for Lunch Boxes, Ice Packs for Lunch Bags

Description

❄️ Stay cooler, longer — because your chill game deserves the best!

HYDRATE SAVE - Ships as dry mix you activate with water—cut down on shipping weight and storage hassle.
FREEZE BEYOND ICE - Maintains a frosty 18°F for up to 48 hours—no more soggy messes or quick melts.
SAFE SUSTAINABLE - Non-toxic, food-safe gel made in the USA—kid-friendly and eco-conscious.
MID SIZE POWERHOUSE - 2 lb gel pack perfectly sized (10in x 9in) for versatile use in any cooler or lunchbox.
SLEEK FLEXIBLE DESIGN - 8 mil thick, 3-layer gel pack adapts to your cooler space for maximum cooling efficiency.

Cooler Shock 4 Mid Size Freeze Packs deliver an industry-leading 18°F cooling temperature that lasts 24-48 hours. Made in the USA with non-toxic, food-safe gel, these 2 lb reusable packs feature a flexible 3-layer design for rapid energy transfer and easy placement. Shipped as a dry mix to hydrate on demand, they offer an eco-friendly, efficient alternative to traditional ice.

Specifications

Brand	Cooler Shock
Model Number	CS MID Screw Cap …
Color	Blue
Product Dimensions	25.4 x 22.86 x 2.54 cm; 340.19 g
Capacity	2 Liters
Material	Gel
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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TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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