Synthetic Ice Test

Frozen water bottles crush blue ice products.

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In Making Ice Last (PS August 2018) we explored cube ice, block ice, dry ice and frozen bottles. Of course, many of the cooler manufactures sell reusable icepacks, touting convenience, decreased mess, and in some cases, lower temperatures. Most are not much use on multi-day trips, since they cant be re-frozen underway, but perhaps they are just the thing for the one- to three-day trips that make up our weekender reality, at least most of the year.
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