We found 8 of the most useful and portable coolers

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Whether you're hitting the beach for the day or planning a picnic in the park, it's important to keep whatever foods and beverages you bring cool this season. Nobody wants to drink lukewarm water or eat partially melted ice cream.

Unless you're driving your car, though, using a large plastic cooler will probably prove bulky and inconvenient, even if it has wheels. 

Enter insulated cooler bags: They keep are much easier to tote around and fold nicely into your backpack or beach bag when empty. Have a look at our favorites below; whether you're packing goods for a group or just yourself, there's something here for everyone. 

Best for big groups

Amazon

If you're packing multiple courses or lots of food for a group, this cooler bag from Evolutionize is your pick. It comes with three reusable containers to store pasta salads, berries, salsas, and more. 

Evolutionize EDC Meal Prep Bag, $39.77, available at Amazon.

Best for beer lovers

REI

Bring beer to the beach with ease thanks to this option from Evrgrn. Not only can it hold up to two 12-packs, the cooler comes with a detachable bottle opener.

Evrgrn Cold Case Cooler, $54.50, available at REI.

Best for campers

Amazon

Coleman's insulated backpack is a great option for both campers and anyone who has the occasional back pain: The two straps evenly distribute the weight between your shoulders, plus there are two handy compartments so you can keep your snacks and hiking gear separate.

Coleman Soft Backpack Cooler, $27.24, available at Amazon.

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