Most backpack coolers don’t have compartments that are designed for multi-day ice retention. However, the Boss 30L is the exception. It has some of the thickest polar plus insulation on the market.
GearJunkie on MSN2d
The Best Backpack Coolers of 2025We tested the best backpack coolers with styles for every budget and trip. Top picks include ICEMULE, Hydro Flask, and more.
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