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A hard inner liner, so nothing arrives crushed

An 18L cooler backpack with a rigid inner liner that holds its shape — cans, fruit and a packed lunch arrive intact — at a featherweight 450g.

The crush-proof one: soft-cooler comfort on your back, hard-cooler protection inside.

£30.99
Fast, FREE UK delivery on all orders £30 or more. Orders under £30 pay a flat £3.99 delivery.

The crush-proof cooler: a rigid inner liner holds its shape so cans, fruit and a packed lunch don't get squashed, with the soft comfort of a rucksack on your back. It manages that at just 450g empty — the lightest bag in the range — with an insulated, wipe-clean 18L chamber sized for one or two people.

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Crush-proof linerA rigid inner shell holds its shape so cans, fruit and lunch don't get squashed in transit.
Featherweight 450 gThe lightest bag in the range empty, despite the structured liner inside.
Soft to carrySoft padded straps give the comfort of a rucksack with the protection of a box.
24-can sizeAn 18L chamber for a lunch and drinks — right for one or two people.

About this cooler backpacks

ASelected 18L Hard-Liner Cooler Backpack

Soft cooler backpacks are comfortable to carry but they let your lunch get squashed; hard cool boxes protect the contents but are a pain to lug. The ASelected splits the difference with a rigid inner liner inside a soft shell. The liner holds the bag's shape, so cans, fruit, eggs and a made-up lunch all arrive as you packed them — no flattened sandwiches at the bottom.

What's surprising is how light it stays. Despite the structured interior, the empty bag is just 450 grams — the lightest in the whole range — so you get crush protection without a weight penalty. The 18-litre chamber is insulated and wipe-clean and, with an ice pack, holds the cold for hours; it's sized for one or two people, a lunch and a few drinks.

On your back it behaves like a normal rucksack: soft, padded straps and a shape that sits comfortably, none of the awkward rigidity of a hard box. It's the bag to choose if you've been let down by squashed food before — a hiker's lunch, a delicate picnic, or anything you want to arrive looking as good as it did in the kitchen.

The details

Specifications

BrandASelected
ColourBlack
Capacity18L
Holds24 cans
InsulationKeeps contents cold for hours with ice packs
Outer materialEPE foam with a rigid inner liner
Water resistanceWater resistant
Weight450 g
StorageA shape-holding hard inner liner, an insulated main chamber, a lightweight 450 g build, comfortable carry straps and a wipe-clean interior
CareWipe clean
Country of originChina

ASelected 18L Hard-Liner Cooler Backpack

£30.99

Free UK delivery · easy returns · secure checkout

Got questions?

Frequently Asked Questions

What does the hard liner actually protect against?

Crushing. The rigid inner shell keeps the bag's shape under load, so soft or delicate items — sandwiches, fruit, eggs, pastries — don't get squashed by heavier cans on a bumpy walk or in a packed car. It's the difference between a neat lunch and a flattened one.

Does the hard liner make it heavy or awkward?

No — that's the clever part. At 450g empty it's the lightest bag in the range, and the soft outer and padded straps mean it carries like a normal rucksack, not a rigid box strapped to your back.

How big is 18L in practice?

It's a one-to-two-person size: a lunch, some snacks and a few drinks. It holds around 24 cans of pure drinks. For group picnics, one of the 30L bags will suit better.

Do you deliver, and how long does it take?

Yes. Your delivery estimate for your address is shown at checkout before you pay, so you can see the timing first. Delivery is free UK-wide on orders over £30, with a flat £3.99 charge under that.

Can I return it if it isn't right?

Yes — you can return it in line with our returns policy for a refund. Keep the packaging where you can, as it makes the return tidier, and get in touch and we'll help.

The complete guide

ASelected 18L Hard-Liner Cooler Backpack: the crush-proof lightweight

3 min read Frostline

The ASelected is the bag for anyone who's tired of squashed lunches. Here's how to use its hard liner well.

Pack delicate items with confidence

The rigid liner is there so you can carry fruit, eggs, pastries and made-up sandwiches without them ending up crushed. Put the heavy cans at the bottom and the delicate food on top — the shape holds, so nothing collapses onto anything.

Enjoy the low weight

At 450g it barely adds anything before you've packed it, so it's a great hiking or cycling lunch bag where every gram counts. Almost all the weight you carry is the food.

Keep the liner clean

Wipe the inside out after use — the hard liner makes this easy, as there are no soft folds for crumbs to hide in — and air it open before storing.

Browse all cooler backpacks

Not sure this is the right size for your days out?

Tell us how many people you pack for and how long you're out, and we'll point you to the right bag in the range — honestly, even if that's not this one.

Still deciding? Ask us a question and we'll help you choose.

ASelected 18L Hard-Liner Cooler Backpack £30.99