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The cooler backpack that laughs at rain, spills and melted ice

A fully waterproof, 8mm-insulated 30L cooler backpack that holds up to 35 cans for 12 hours, with two compartments and heat-welded seams that keep water where you want it.

Built for British weather and clumsy hands — nothing gets in, nothing leaks out.

£69.99
Fast, FREE UK delivery on all orders £30 or more. Orders under £30 pay a flat £3.99 delivery.

The Hulongo's headline is water: a PU-coated, scratch-resistant nylon shell that's fully waterproof outside, and heat-welded seams that keep melted ice sealed inside. Behind that, 8mm of foam wraps a 30L body that swallows up to 35 cans and holds them cold for up to 12 hours, split across two compartments so drips never reach the dry food.

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100% waterproof shellPU-coated, scratch-resistant nylon keeps rain and sea spray out and wipes clean in seconds.
Heat-welded seamsSeams are sealed by heat, not just stitched, so melted ice stays inside the liner.
Up to 35 cans8mm foam insulation across a 30L body holds a big load cold for up to 12 hours.
Two compartmentsSeparate zones keep dripping drinks away from dry food and snacks.

About this cooler backpacks

Hulongo 30L Waterproof Cooler Backpack

If you've ever pulled a cooler bag out of the car boot to find a puddle underneath, the Hulongo is the answer. It's built around being genuinely waterproof in both directions: the outer is a scratch-resistant nylon with a PU coating that rain and sea spray simply bead off, and the inner liner's seams are sealed with heat rather than stitched, so melted ice has nowhere to seep out.

That waterproofing wraps a serious cooler. Eight millimetres of high-density foam line a 30-litre body that takes up to 35 cans, and with ice packs it holds temperature for around twelve hours — enough for a full beach or camping day. Two separate compartments let you keep the dripping cans and ice apart from bread, crisps and anything you'd rather keep dry.

The practical touches are all present: a large front pocket and two side pockets for phones, sun cream and bottles, a bottle opener on the strap, and padded straps to carry a heavy, fully-loaded bag in comfort. In understated grey it doesn't shout, but it's the one to reach for when the forecast is bad or the ground is wet.

The details

Specifications

BrandHulongo
ColourGrey
Capacity30L
Holdsup to 35 cans
InsulationKeeps contents cold up to 12 hours with ice packs
Outer materialScratch-resistant nylon with PU coating
Water resistance100% waterproof
Dimensions31 x 20 x 45 cm
StorageTwo insulated compartments, a large front pocket, two side pockets, a strap bottle opener and heat-welded leakproof seams
CareWipe clean
Country of originChina

Hulongo 30L Waterproof Cooler Backpack

£69.99

Free UK delivery · easy returns · secure checkout

Got questions?

Frequently Asked Questions

When you say waterproof, do you mean the outside or the lining?

Both, in the ways that matter. The nylon shell is PU-coated so rain and spray stay outside, and the liner's seams are heat-welded so melted ice and spills stay inside. It's not a dry bag to be filled with water, but everyday wet — rain, a leaking tub, a bag of ice — is exactly what it's built for.

How does 35 cans compare to the rest of the range?

It's one of the higher-capacity 30L bags here, sitting just below the 48-can GartWerk. For most families 35 cans' worth of space is plenty for a full day, especially once you factor in food tubs and ice packs.

Is the grey nylon hard to keep clean?

No — the coated surface wipes down with a damp cloth, and because it's water-resistant, mud and sand don't soak in. A quick wipe inside and out after a trip keeps it looking new.

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

Hulongo 30L Waterproof Cooler Backpack: the weatherproof workhorse

3 min read Frostline

The Hulongo is the bag for wet ground, bad forecasts and butter-fingered picnics. Here's how to lean on what makes it different.

Trust it in the boot

Because the seams are welded, you can stand it in a car boot or on damp grass without worrying about a puddle forming underneath. Melted ice collects in the sealed liner instead of leaking — just tip it out at the end of the day.

Split wet from dry

Use the two compartments deliberately: dripping cans and loose ice in one, bread and crisps in the other. It's the simple habit that stops soggy sandwiches on a long day.

Keep the coating happy

The waterproofing lives in the PU coating, so wipe it clean rather than scrubbing hard, and always store it dry and open. Treated gently, the shell stays fully waterproof for years.

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.

Hulongo 30L Waterproof Cooler Backpack £69.99