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 (Set ofÃ‚ 4) - Long Lasting Cold Freezer Packs for Large Coolers & Lunch Bags - Compress for Knee Injuries, Back Pain Relief, Post-Surgery Accessories

Cooler Shock Reusable Ice Packs (Set ofÃ‚ 4) - Long Lasting Cold Freezer Packs for Large Coolers & Lunch Bags - Compress for Knee Injuries, Back Pain Relief, Post-Surgery Accessories

Product ID: 96359211

Details

Brand
Cooler Shock
Colour
stars
Material
Plastic
Package Information
Box
Capacity
2 litres

📏Generous 10x9 inch size

♻️Reusable & eco-friendly

❄️Long-lasting cold retention

S/.501

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Description

❄️ Stay Cool, Stay Ahead: The Ultimate Reusable Ice Pack Set for Every Chill Moment

MULTI PURPOSE COLD THERAPY - Ideal for knee injuries, back pain relief, and post-surgery recovery—portable pain management on the go.
LEAK PROOF SCREW CAP DESIGN - No mess, no fuss—secure seal keeps water inside and your bag dry.
FREEZE REUSE SAVE CHILL - Ditch disposable ice—just add water and refreeze for endless cooling power.
PACK OF FOUR FOR MAXIMUM COVERAGE - Stay prepared with four durable ice packs, perfect for extended trips or multiple uses.
PERFECT FIT FOR LARGE COOLERS LUNCH BAGS - Generous 10x9 inch size keeps your food and drinks icy fresh all day.

Cooler Shock Reusable Ice Packs come in a convenient set of four, each measuring 10x9 inches. Designed for long-lasting cold retention, these eco-friendly packs feature a leak-proof screw cap and are perfect for large coolers, lunch bags, and therapeutic cold compress needs like injury relief and post-surgery care.

Specifications

ASIN	B0773FVRZY
Batteries Included	No
Batteries Required	No
Best Sellers Rank	#192,820 in Sports, Fitness & Outdoors ( See Top 100 in Sports, Fitness & Outdoors ) #533 in Camping & Hiking Cooler Accessories
Brand	Cooler Shock
Customer Reviews	4.6 4.6 out of 5 stars (11,563)
Date First Available	12 January 2019
Does it contain liquid?	Yes
Item Dimensions LxWxH	25.4 x 2.5 x 25.4 Centimeters
Item Weight	340 g
Item model number	Shock-1/18F-Dry
Model	Shock-1/18F-Dry
Net Quantity	1.00 Count
Number of items	4
Product Dimensions	25.4 x 2.54 x 25.4 cm; 340.19 g
Special Features	Portable

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S/.501

Duties & taxes included

In stock

Sold byAmazon PeruDelivered 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 Peru.

Secure transaction

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