• SUNVENO insulated lunch cooler bag with adjustable strap, featuring a spacious design for food and drinks storage.
  • SUNVENO insulated lunch cooler bag with adjustable strap, showing a gray tote with zipper closure and carrying handle.
  • SUNVENO insulated lunch cooler bag with adjustable strap, featuring a compact design and easy-to-carry handle for lunch storage.
  • Sunveno insulated lunch cooler bag with adjustable strap, portable tote for keeping food fresh and cool.
  • SUNVENO insulated lunch cooler bag with adjustable strap, showing a compact, portable lunch tote with insulated interior for food storage.
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SUNVENO

Insulated Lunch Cooler Bag with Adjustable Strap

Insulated Lunch Cooler Bag with Adjustable Strap

$25.95 USD
$25.95 USD
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  • Ships To: United States
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Product Type: Cooler Bags

Five millimeters of foam behind the foil, in a bag that still folds flat. Most collapsible coolers are thin because thickness fights folding, and five millimeters is the point where insulation starts working without the bag becoming a box.

Five Millimeters Of Foam Behind The Foil

The foil reflects radiant heat and the foam blocks conduction, and you need both. A foil-only liner in a thin bag is decoration; the foam layer behind it is what actually slows the transfer, and 5 mm of PE foam is a real thickness rather than a token one.

Insulated lunch cooler bag shown open with the foil lining and partition visible.
Foil lining over a 5 mm foam core, with the partition in place.

Two Sizes, Five Cans Or Ten Bottles

The small takes five cans and the large takes ten bottles, which is a far more useful way to describe capacity than inches. Small suits one person's lunch; large suits a family day out or a shop run where the cold chain matters on the way home.

Lunch Cooler Specifications

Sizes and materials for the insulated lunch cooler bag
Detail Figure
Small 10 by 6.8 by 6 inches, holds 5 cans
Large 10 by 9.8 by 6 inches, holds 10 bottles
Exterior 600D polyester
Insulation 5 mm PE foam with aluminum foil lining
Interior Detachable partition, two pockets
Opening Double zipper
Finishes Silver and golden

The Partition Comes Out

With it in, hot and cold stay apart. With it out, a single tall item fits that would not otherwise. That is the same reconfigurability argument as a removable divider anywhere: the bag adapts to the day rather than the day adapting to the bag.

It Collapses Flat

Empty, it folds down for a drawer or a car door. A rigid cooler holds its volume permanently whether you are using it or not, which is why the collapsible ones get used more often.

Foil And Foam Buy You Hours, Not A Day

No passive cooler refrigerates. It slows the drift toward room temperature, and how long depends on what you put in with it. An ice pack turns hours into most of a day; without one, plan on a lunch break rather than a whole shift.

Lunch Cooler Questions

Which size holds a family lunch? The large, rated at ten bottles. The small is a single person's lunch at five cans.

Does the partition have to stay in? No, it detaches when you need one open space.

How long does it keep things cold? Hours rather than a day, and considerably longer with an ice pack inside.

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