The 7 Best Cooler Backpacks
Updated by · How we research
In ice tests, backpack coolers kept food cold for 1.5 to 3.6 days. The Yeti Hopper M20 leads seven picks compared on insulation, waterproofing and comfort. When users buy our independently chosen editorial choices, we may earn commissions to help fund the Wiki.
In an independent ice-melt test, the best roll-top backpack coolers kept food below 40 degrees for two to over three days, while cheap zippered packs gave up in about a day and a half. That gap matters on a long hike or river float. For a beach afternoon or a ballgame, a light zip-top pack does the job for less.
Editor's Notes
October 26, 2026, by Ezvid Wiki Editors:
Ice life settled the top spot. The Yeti Hopper M20 held food cold longest and stood up best in OutdoorGearLab's side-by-side soft-cooler test, updated in September 2026. That test, the CPSC recall record and each maker's foam and seam specs shaped this ranking. One caution: older M20s were part of a 2023 magnet recall, so check a used one.
The IceMule Pro stays, still the one to take on a river. The Igloo Switch Marine is gone because only an unavailable special edition is left, and the Polar Bear Coolers PB290 had no current price or stock, though the company still sells backpack coolers direct. We also dropped the Oniva Zuma, VonShef Picnic, Coleman C003, OAGear WCLBP, Mojecto Heavy Duty and Picnic at Ascot 537-HT, older designs with no ice data, and the Tourit 30-Can replaces the Tourit Soft. New picks are the Engel BP25, Sparter 33-Can, RTIC Lightweight 15 and Hydro Flask Carryout.
Earlier notes
April 19, 2019, by Taber Koeghan:
Obviously, the most important question when choosing a cooler backpack is whether or not it can keep your beverages and snacks the temperature you desire, and for how long. This is why we've only chosen items that have a strong track record of insulating liquid and even ice for long periods of time. Secondary features that we looked for include durable padded straps, additional pockets, slots for cutlery and glassware, and attached blankets. There are bags here that have tons of bells and whistles, in addition to no-frills options that tend to be more budget-friendly.
With regard to updates, the Polar Bear Nylon Backpack was removed due to availability issues. The Igloo Marine Ultra Square Cooler was also taken off the list after investigating several complaints about insufficient insulation, though the similarly stylish and more functional Igloo Switch Marine was added in its place.
Special Honors
IceMule Jaunt The smaller IceMule Jaunt, a 15-liter welded roll-top, earned OutdoorGearLab's top score among soft coolers and kept food cold for 2.7 days in its ice test. It suits a day on the water for one or two people, and IceMule sells it direct. icemule.com
Polar Bear Coolers Polar Bear has made soft coolers since 2002 and sells its backpack coolers, soft coolers and ice packs direct. Its PB290 backpack sat on this list before and left only because it had no current price. polarbearcoolers.com
Hours Or Days: How Long The Ice Lasts
The budget zip-top packs, including the Tourit and the Sparter, lasted 1.5 to 1.9 days.
Backpack coolers split into two groups. Zip-top packs with thin foam are light and cheap, and they suit an afternoon. Roll-top packs with thick closed-cell foam and welded or taped seams weigh more and cost several times as much, but they hold ice for days. In OutdoorGearLab's soft-cooler ice test, updated in September 2026, the Yeti Hopper M20 kept food below 40 degrees for 3.6 days, the Engel BP25 for 2.5 days and the IceMule Pro for 2.3 days. The budget zip-top packs, including the Tourit and the Sparter, lasted 1.5 to 1.9 days.
Those numbers come from bags packed with ice and left shut. Real trips are harder on ice: warm cans, a hot car and a lid opened every hour all cut the time. Chill the bag and its contents overnight, use frozen water bottles that turn into drinking water later, fill empty space so less air moves around, and keep the pack in the shade. The 40-degree line matters for food. The USDA says bacteria grow fastest between 40 and 140 degrees, so throw out meat or dairy that sat in a bag after its ice melted.
Roll-Top, Zipper And Getting Wet
The zipper is the weak spot. Most zippered packs aren't watertight, so rain can seep in and meltwater can leak out if the pack tips over, and Sparter says plainly that its zipper isn't leakproof. A roll-top works like a dry bag: fold the top down several times, clip it, and nothing gets in or out. The trade-off is slower access, since you open the whole top to reach one drink.
For rafting, kayaking or a boat, a welded dry-bag design is the safer choice. OutdoorGearLab recommends that style for water use and noted that the Sparter's fabric gets wet quickly. The IceMule Pro goes further: its seams are welded, and air in its walls lets it float if it goes over the side (IceMule). The Yeti's roll-top seals with a magnetic strip and two buckles. OutdoorGearLab's long-term review found the buckles hard to work but rated the bag the toughest it had handled.
Carrying The Load, And A Recall To Check
Water is heavy. A backpack cooler full of cans and ice can weigh 20 pounds or more, so look for padded shoulder straps, a padded back panel and a chest strap that keeps the straps from sliding off. OutdoorGearLab found weight distribution was where budget packs fell short once full, and the Engel BP25 has no hip strap at all.
If you're buying a used Yeti, check when it was made. In March 2023 the U.S. Consumer Product Safety Commission announced a recall of Hopper M20 backpacks, M30 soft coolers and SideKick Dry gear cases sold from March 2018 through January 2023, because magnets in the closure could come loose and be swallowed by a child. Yeti had 1,399 reports of closures failing, with no injuries, and offers a refund or replacement. After each trip, pour out the meltwater, rinse the liner with mild soap and let the bag dry open so it doesn't start to smell.
How we researched this
We compared 19 backpack coolers from 16 brands, read the makers' specs on foam, shell fabric and closures, used OutdoorGearLab's side-by-side ice-melt and durability results for the five picks it covered, and checked every brand against the U.S. Consumer Product Safety Commission's recall database. Updated October 26, 2026 by Ezvid Wiki Editors.
Frequently asked questions
How many cans fit in a backpack cooler?
Fewer than the label says once you add ice. Can counts are often measured with no ice, so plan on about half to two-thirds of the claim. OutdoorGearLab fit about 36 cans in the Yeti Hopper M20 with little room left for ice.
How long does ice last in a backpack cooler?
In OutdoorGearLab's test, from about a day and a half for thin zip-top packs to 3.6 days for the Yeti Hopper M20, with the bag kept shut. Expect less in hot sun with frequent opening.
Are backpack coolers waterproof?
Roll-top and welded dry-bag designs, such as the Engel BP25 and IceMule Pro, keep water out. Zip-top packs aren't watertight, and Sparter says its zipper isn't leakproof.
Which backpack cooler floats?
The IceMule Pro floats when its walls hold air, IceMule says, which makes it the one for rivers, kayaks and boats.
Was the Yeti backpack cooler recalled?
Older ones were. Hopper M20 backpacks sold from March 2018 through January 2023 were recalled in March 2023 because closure magnets could come loose. Owners can get a refund or replacement from Yeti.
