How to Purify Water in the Backcountry
How to purify water in the backcountry: compare boiling, filters, chemical treatments and UV light, and learn a safe routine for collecting water.

Cover storyGear Tests & Reviews
Sleeping bag temperature ratings explained: what comfort, lower limit and extreme ratings mean, how bags are tested, and how to pick the right rating for you.
Read the guideHow to purify water in the backcountry: compare boiling, filters, chemical treatments and UV light, and learn a safe routine for collecting water.
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Field note
To store outdoor gear between trips, clean it, dry it completely, store insulation loose rather than compressed, and keep everything in a cool, dry, dark place away from pests.
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How to purify water in the backcountry: compare boiling, filters, chemical treatments and UV light, and learn a safe routine for collecting…

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How to stay warm while camping: choose the right pad and sleeping bag, wear dry layers, eat well, pick a sheltered site…

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How to store outdoor gear between trips: clean and dry everything, keep insulation loose, store fuel and batteries safely, and organize bins…

A family camping checklist for shelter, sleep, kitchen, clothing, safety and kids, plus tips for babies, toddlers, packing the car and avoiding…