Collection: Waterproof Cooler Bags

Explore our Waterproof Cooler Bags, designed to keep drinks ice cold for 24+ hours. Soft shell construction for easy storage, perfect for camping, festivals, water adventures, or beach days.

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Keep Your Drinks Ice-Cold with Waterproof Cooler Bags

At OverBoard, we offer a range of waterproof cooler bags designed to keep your drinks and food cold for up to 24+ hours, all while providing durability and convenience. Perfect for outdoor adventures, picnics, or beach days, our waterproof cooler bags combine high-performance insulation with a soft-side construction that easily packs down when not in use. Here’s why you’ll love our collection:

  • Made with soft-side construction, our waterproof cooler bags can be conveniently packed down after use, saving space while still providing reliable insulation when you need it most.
  • Designed with HF welded construction and a roll-top seal, these waterproof bags offer full waterproof protection to ensure your contents stay dry and secure, even in wet conditions.
  • Our cooler bags are built to keep contents ice-cold for up to 24+ hours, making them the ideal solution for long outdoor activities, hikes, or day trips.
  • Featuring a shoulder strap for easy carrying, or an air-flow back panel for enhanced comfort and ventilation, these bags provide both practicality and comfort on the go.
  • Perfect for anyone who loves outdoor adventures, camping, beach days, or festivals, our waterproof cooler bags are built to keep your food and beverages at the perfect temperature for hours.

Choose OverBoard waterproof cooler bags for reliable, functional, and stylish hydration and food storage that keeps your essentials cold and secure, wherever your adventures take you.

FAQS

HOW MUCH ICE DO I NEED INSIDE MY OVERBOARD COOLER?

To get the best cooling performance, we recommend filling approximately 1/3 of the cooler’s total capacity with ice, placed on top of your drinks or food. This setup helps ensure your contents stay cold for up to 24 hours.

For longer-lasting chill, consider using large ice blocks or reusable ice packs, which melt more slowly than loose cubes.

Tip: Always pre-chill your items before placing them in the cooler for maximum efficiency.

HOW LONG WILL AN OVERBOARD COOLER BAG OR BACKPACK RETAIN ICE FOR?

Thanks to an innovative dual-layer foam core, our Cooler Bags and Backpacks are designed to keep contents cold for up to 24 hours. The integrated air valve boosts insulation by allowing you to add air once the cooler is packed, further helping maintain internal temperature.

To maximise performance, here are some helpful tips:

  • 🧊 Use plenty of ice – ideally 1/3 ice to 2/3 contents, or more if weight isn’t an issue
  • ❄️ Pre-chill or freeze drinks before loading
  • 🕶️ Keep your cooler in the shade or a cool place whenever possible
  • 🧺 Load drinks first, ice last – cold air travels downward
  • 💧 Don’t pour out melted water – it helps maintain a cold environment
  • 🔒 Seal the cooler properly and minimise how often it’s opened

By following these tips, you can get the maximum cooling duration and performance out of your Waterproof Cooler—whether you're heading to the beach, on the water, or out for a full-day adventure.

HOW WATERPROOF ARE YOUR COOLERS?

Our soft sided Cooler Bags and Backpacks are 100% waterproof thanks to their welded seams and roll-top sealing system. Once sealed correctly, they will protect the contents from rain, splashes, and even quick submersion.

This means you can confidently use them around boats, beaches, campsites, and wet environments without worrying about water getting in—or melting ice leaking out.

Note: While they can handle quick submersion, we don’t recommend prolonged immersion in water.

WHAT WILL FIT INSIDE EACH SIZE OVERBOARD COOLER BAG AND COOLER BACKPACK?

To help you choose the right size, we’ve created a Cooler Size Comparison Guide that shows how many 330ml cans + ice each cooler can hold. You can download the guide here.

As a general rule, we recommend filling around 1/3 of the cooler with ice, placed on top of your drinks, to keep contents chilled for up to 24 hours.

This layout maximises cooling efficiency while leaving plenty of space for your drinks or food.

Tip: Using large ice blocks or ice packs (instead of loose cubes) can help reduce melt rate and extend cooling time.

IS IT OK TO STORE FOOD IN YOUR WATERPROOF COOLER BAGS & BACKPACKS?

Yes! All of our Waterproof Cooler Bags and Backpacks are safe for storing food and drinks.

The internal lining is fully tested and certified BPA-free (Bisphenol A-free), meaning it’s food-safe and non-toxic. You can confidently use our coolers to store everything from snacks and sandwiches to fresh ingredients and beverages.

Perfect for days out, picnics, and camping trips—no additional food-safe liners required.

WHAT’S THE DIFFERENCE BETWEEN THE WATERPROOF MAIN COMPARTMENT AND THE WEATHERPROOF ZIP POCKET?

The Coolers Dry Bags include an external weatherproof zip pocket with an IP65 rating.

  • The main compartment (IP66) is designed for quick submersion and will protect contents if the bag is briefly dropped in water.
  • The weatherproof zip pocket (IP65) is foul weather and spray proof, meaning it can handle rain, splashes, and spray—but it is not submersible. Water may enter the zip pocket if the bag is fully submerged.

Tip: Store valuables, electronics, or water-sensitive items inside the main roll-top compartment rather than the outer zip pocket when in wet or unpredictable conditions

WHAT IS THE MAXIMUM WEIGHT THE OVERBOARD COOLERS CAN CARRY?

All of our Cooler Bags and Backpacks are tested to safely carry up to 25kg of total weight.

This includes the combined weight of your drinks, food, ice, and any additional items. Whether you're packing for a day at the beach, a camping trip, or a boat excursion, you can rely on the cooler to handle heavy loads with ease.

WHAT IS THE AIR VALVE USED FOR?

The air valve on our Cooler Bags and Backpacks serves two key purposes:

  1. It allows you to purge excess air trapped between the two insulating layers, making the cooler easier to compress and pack away after use.
  2. When in use, you can add extra air into the insulation chamber to boost cooling performance, helping to maintain internal temperature for longer.

Helpful Tips:

  • Avoid overfilling with air, as this can reduce insulation efficiency and limit internal storage space.
  • If using your cooler around or in water, make sure the air valve is firmly closed to prevent water from entering the insulation layer.
HOW DO YOU SEAL THE WATERPROOF COOLER BAGS & BACKPACKS?

All of our soft cooler bags and backpacks use a simple roll-top sealing system that makes them 100% watertight.

To seal:

  • Roll the top down tightly at least 3 times
  • Then clip the buckles together at the sides or top

This design eliminates the need for zips—so there's nothing to jam or break—and makes it quick and easy to access your food and drinks while keeping water out.

WHAT’S COVERED BY YOUR 5-YEAR EXTENDED WARRANTY?

Our 5-year extended warranty covers manufacturing defects, including issues with materials, stitching, and zippers under normal use. It does not cover damage from misuse, accidents, or wear and tear. For full details and to view the warranty terms, please visit our Warranty Portal.

WHAT IS YOUR EXCHANGE AND RETURNS POLICY?

We offer a hassle-free exchange and returns policy, allowing you to return items within a specified period for an exchange or refund, as long as they meet our return conditions. For full details on how to return or exchange items, please visit our Exchange & Returns Policy page.

SAME DAY DISPATCH

on pre-3pm orders

FREE DELIVERY*

*on Orders Over £50