How much does each brick weigh?

Each brick when frozen weighs ~450g (just slightly less than a pound).

is this product good/safe for keeping my food cool in a lunch box?

Yes, they are really better than the gel ones, I specifically bought these because of the foam as I has some before and the worked really well. I would probably use 2 or more depending on the size of your lunch box.

When not used, should I keep them in the refrigerator?

I don't, I just keep them in the empty cooler, make sure you put in the freezer a good 48 hours before you plan to use them.

Why is the two pack more expensive than buying two one packs?

I don't know; ask Amazon. That seems true with many of their offerings.

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Polar Tech RB15 Re-Freez-R-Brix Foam Refrigerant Pack, 4-1/2" Length x 4" Width x 1-1/2" Thick (Case of 6)

Polar Tech RB15 Re-Freez-R-Brix Foam Refrigerant Pack, 4-1/2" Length x 4" Width x 1-1/2" Thick (Case of 6)

Product ID: 162314167

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Details

Brand
Polar Tech
Material
Foam
Product dimensions
11.4L x 10.2W
Colour
White
Item weight
15 Ounces

🧊Rigid foam structure

♻️Reusable & eco-friendly

❄️Long-lasting chill

Description

❄️ Stay cool, stay ahead—because your chill game deserves the best!

SAFE NON TOXIC - Sealed in heavy-duty plastic, ensuring safe contact with your essentials.
DURABLE RIGID FOAM - Maintains shape frozen or thawed—no mess, no fuss, just reliable performance.
EXTENDED COOLING POWER - Keeps your perishables perfectly chilled for hours, beating the heat every time.
ECO CONSCIOUS REUSABILITY - Designed for multiple uses, reducing waste while saving you money.
VERSATILE TEMPERATURE CONTROL - Prevents thawing and protects against freezing when used with insulated containers.

The Polar Tech RB15 Re-Freez-R-Brix is a rigid foam refrigerant pack measuring 4.5" x 4" x 1.5", designed to keep frozen products chilled for extended periods. Made from durable, non-toxic materials and sealed in heavy plastic, it remains rigid whether frozen or thawed. Reusable and economical, it also helps prevent freezing when used properly, making it an essential companion for maintaining optimal temperature in insulated containers.

Specifications

Manufacturer	Polar Tech
Part number	RB 15
Item Weight	425 g
Product Dimensions	11.43 x 10.16 x 3.81 cm; 425.24 g
Item model number	RB 15
Size	4.5" x 4" x 1.5"
Colour	White
Material	PLA_(Polylactic_Acid), PE_(Polyethylene), PS_(Polystyrene), Foam
Item Package Quantity	1
Batteries included?	No
Batteries Required?	No

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1553 DH

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Moroccostore

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TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

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Polar Tech RB15 Re-Freez-R-Brix Foam Refrigerant Pack, 4-1/2" Length x 4" Width x 1-1/2" Thick (Case of 6)

Details

Description

Specifications

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