Picnic season is well and truly underway, and as all al fresco diners know, a meal outdoors just isn’t complete without a bottle of something cold and refreshing with which to wash everything down.

As gentle as the British sun is, when the mercury hits a high, that spells disaster on the drinks front. Lukewarm vino and sweaty cheese? Yech. No thank you.

As well as liquids, there’s salads, sarnies, cold cuts and anything else that needs to be refrigerated to consider. And if you’re planning to take a cool box away for camping, fishing trips, long road or rail journeys or to a festival, you’ll need something with more insulation than a basic picnic cool box.

From hard cases to soft foldable designs, ones that are perfect for two and others that can carry an entire family feast for a weekend’s camping, here are the best cool boxes to keep your food at its freshest.

If you're hosting a party or BBQ you'll need a heavy duty cooler to keep everyone’s thirst quenched. This beast can store more than 47 litres and is easy to move around thanks to the back roller wheels and telescopic handle.

The injected Polyurethane foam insulation has been proven to keep food and drink cold for up to five days, making the Xtreme is ideal for festivals and group camping trips.

It's multi-functional too; the lid sports four cup holders so you can use as a side table or just add a cushion to use as a makeshift seat - it can hold up to 113kg.

However great its performance, the price is certainly a factor and this falls in the top end of the spectrum. If you throw parties or go camping a lot, this cooler is a sound investment, but if you’re after a cooler for occasional use only, there are better ones for your needs on this list.

Using the power of electricity, this clever 12V cooler keeps your contents around 20 degrees below the outside temperature making it ideal for long trips as well as family picnics.

Think of it more as a mini fridge than a cooler and enhance the cooling effects with ice blocks. Holds a note-worthy 24 litres. If you love a good but practical gadget this one is for you.

This cooler's not messing around; it has ultraviolet inhibitors to protect against sun damage, four self-draining cup holders and a locking telescoping handle with gear hangers - and that's just for starters.

You could call it the Bear Grylls of coolers, able to withstand everything from the harshest environments to the sunniest of days. The drain plug is perfect for keeping contents dry. When filled with ice packs it can keep contents cold for up for two days. 

There’s no need to worry about losing sight of your cool box with this design; the eye-catching colour palette means it’s easy to spot in any crowd. It holds an impressive 24 litres inside the large storage area and comes with a handle for easy transportation.

Featuring a drain valve to empty out liquid when you're finished with it to maintain efficiency, this circular cooler keeps drinks chilled with the use of ice or ice blocks.

It's available in three sizes  – 30L, 60L and 5.8L - all you need to do is open the top, and fill with the drink of your choice. Then use the tap to pour yourself something refreshing.

Made from high density PU foam for enhanced insulation, this comes with a fold flat handle for easy carrying.

No need to sling in an ice pack into this cooler, it keeps food and beverages chilled for 11 hours on its own (although of course, ice blocks will only serve to enhance its performance).

There are two mesh storage pockets on the outside while inside the compartment there is a band to hold bottles steady as well as two additional net pockets.

It's a self-inflating design, which means it's significantly lighter than a hard case, but that doesn't mean it's flimsy. The reinforced polyester (PES) 600-denier fabric on the bottom helps keep it sturdy. Once used, you can fold down the height from 43cm to an impressive 13cm.

The cult Swedish brand needs no introduction; you’ve probably seen dozens of their backpacks on your daily commute. However, the brand also does a cool bag version encased in a durable waxed G-1000 HeavyDuty Eco S fabric with foam padding and available in a choice of six colours.

As capacity goes, this has space for three bottles of beer or one packed lunch, so it’s very much for a single diner or a few drinks in the park with friends. Good news if you’re already the owner of a Kånken Mini or a regular Kånken – the W20.5 x H26 x D9 cm dimensions of this cooler means it will fit with ease.

Short on space but need something for a full day’s adventures? Look to Summit for this ingenious pop-up cool box, which keeps food and drink chilled for up to eight hours and collapses down for compact storing afterwards.

Perfect for family picnics, hiking or just bringing back groceries from the supermarket, this Trespass Cooler Tote can hold an impressive amount thanks to the 20.78 litre capacity, the equivalent of 24 cans or three 1.5 litre bottles.

The wipe clean polyester bag has a wide zip fastening and two strong shoulder straps to make for easy carrying.

Fold it down and store in your normal bag to whip out when required – it’s only 0.3kg so you won’t even notice it until you need it.

Cucumbers, step aside; it's the turn of the grapefruit. Keeping your drinks and snacks cool as you head to the park, beach or one of London's lidos for a sunny afternoon of fun. 

The grapefruit-slice bag comes with lengthy 70cm handles (perfect for slinging over your shoulder) and fastens with a metal zip. 

A medium-sized cooler bag you don't have to hold or wheel is surely the ultimate in convenience. Sling this chic monochrome backpack cooler over your shoulders and leave your hands free for more important things, such as map reading, hand holding or holding more snacks.

Lined with thick insulation and a roomy external pocket, this deceivingly small polyester cooler can hold four 1.5 litre bottles and is tall enough for a bottle of Champagne too. Now that's something to celebrate.

This fun cooler is in the shape of the fruit du jour - the pineapple. It's perfect for barbecues and day trips with a small group of friends, thanks to it's easily packable design and four built-in bottle holders. Simply pack the centre with ice and add your favourite bevvies. 

For frequent users, the Coleman 50QT Xtreme Wheeled Cooler stands head and shoulders above the rest. Find it on Go Outdoors or on Amazon — the variable sizes offered from both sites will suit different cooling needs.

The king-size capacity combined with the cup holders and its versatility as a seat – not to mention the wheels - make it our Best buy.

On the budget end of the scale, Trespass’ Cooler Tote Bag is our star buy. Great for picnics and roomy enough for the weekly shop, this one’s a cost-effective winner.

ESBest product reviews are unbiased, independent advice you can trust. On some occasions, we earn revenue if you click the links and buy the products, but we never allow this to bias our coverage. The reviews are compiled through a mix of expert opinion and real-world testing.

12v Mini Fridge

Ice Maker, Beer Cooler, Cooler Bag, Cooler Box, Mini Bar Fridge - Rykay,https://www.rykay.com/