Hulongo Large Waterproof Insulated Cooler Backpack – leak-proof cooler bag for men & women

Quick overview

If you’re tired of lugging a heavy cooler around, this Hulongo large insulated cooler backpack is built to move like a regular daypack while keeping food and drinks chilled for longer. It’s designed for everyday outings where you want your stuff to stay at the right temperature without the mess of leaks or wet bags.

On paper, the big selling points are the thickened 8mm foam insulation for heat retention and a waterproof, leak-proof shell that’s meant to be easy to wipe clean. The layout is also practical: insulated sections for cold items, plus extra storage for phone, snacks and small essentials.

That said, it’s still a cooler backpack—so you’re not getting the same “set-and-forget” performance as higher-end dedicated coolers, and it may feel bulky compared with a standard bag if you’re travelling light.

What to know before you buy

This is a leak-proof insulated backpack cooler intended for chilled food and drinks on the move. The manufacturer claims up to 12 hours of cool performance, supported by thickened 8mm foam insulation and an advanced silver PEVA seal. If your plan is a long day out—beach, picnic, camping, hiking, or even a big grocery run—this kind of insulation approach can make a noticeable difference versus an ordinary insulated tote.

It’s also described as waterproof, made from high-density scratch-resistant nylon with an extra PU coating. In real terms, that’s the sort of build you look for if you’re likely to set it down on damp grass, keep it in the car on rough days, or want peace of mind around condensation and spills.

One limitation to keep in mind: “up to” timeframes are always conditions-dependent (starting temperature, outside heat, how often you open it). So if you’re counting on very specific timing, it’s worth adjusting expectations.

Key features that matter in use

The most practical part here is the internal layout. The backpack includes two insulated compartments, intended to keep drinks cool and food dry at the same time. Having two separate insulated areas can be handy when you want to separate tall bottles from snacks or avoid warming everything up by opening one compartment repeatedly.

Outside the insulated sections, you get a front big pocket plus two side pockets. That’s useful for keeping everyday carry items accessible—think your phone, wallet, or a few snacks—without constantly rummaging inside the cooler part.

There’s also a bottle opener included, which is a small detail, but it matches the “day out” use case.

Waterproof and leak-proof design

Leak-proof is often where cheaper cool bags fall down, and this one is aimed at that concern. It uses a seamless hot pressing process and includes “smooth horizontal zippers” positioned as part of the anti-leaking approach. If you’ve ever had a cooler bag sweat through or leak after a rough commute, you’ll understand why that matters.

There’s also an “easy to clean” angle: the high-density nylon with PU coating is described as scratch-resistant and designed to be 100% waterproof. Over time, that can save you effort compared with softer fabric bags that stain or hold odours.

You should still treat it as a cooler backpack: don’t overfill to the point where zippers are under strain, and try to let food cool down before packing if you can.

Capacity and dimensions (so you can picture it)

Space is a big part of whether a cooler backpack is worth it, and this one is pitched as “large”. The dimensions are 17.7'' x 12.2'' x 7.9'' (H x L x W), and it’s described as accommodating up to 35 cans of 330ml.

For a micro example: imagine packing a picnic for two—two or more chilled drinks plus a couple of meal containers and snack bags—then using the side pockets for a water bottle and a few extra items you want to reach quickly. Two insulated compartments also make it easier to keep drinks and food from getting mixed up.

Where it shines, and where it may not

It’s a strong fit if you want insulated cooling with the convenience of a backpack: days out, travel to the park, camping where you’re carrying your own kit, and shopping runs where you need to keep cold items stable from start to finish.

It may not be a great match if you only need a very small cooler for short trips, or if you prefer a slim bag that doesn’t take up space in the car. Also, if you’re the kind of person who rarely opens their cooler and wants maximum performance, you might find that other cooler types in the market (with simpler access and thicker insulation) suit better—this backpack focuses on portability.

Is it worth it?

This Hulongo cooler backpack makes sense for people who carry their own food and drinks and want the bag to cope with outdoor conditions. If you prioritise waterproofing, leak-proof design, and multiple pockets for day-to-day convenience, it’s the kind of cooler that can earn its place in your routine.

You may want to skip it if you’re buying purely for very short outings, or if you’re not comfortable with the extra bulk of a large insulated backpack. Before committing, it’s worth double-checking the storage layout in your head (two insulated compartments plus front and side pockets) and comparing the stated capacity against what you typically carry.

Mini FAQ

How long does it keep things cool?

The product description claims up to 12 hours, but actual performance will depend on conditions like starting temperature, weather, and how often you open it.

Is it really waterproof and leak-proof?

It’s described as 100% waterproof and completely leak-proof, using a seamless hot pressing process and anti-leaking zippers. As with any cooler bag, avoid overfilling and handle it sensibly.

What can I store in it besides food and drinks?

You get a front big pocket and two side pockets for accessories such as your phone and wallet, plus snacks.

Does it come with a bottle opener?

Yes, the description says a bottle opener is provided for convenience.