A scenic hike or float trip is all fun and games until you run out of water. You know what we’re talking about: That last drop in your water bottle is always just enough to make you suddenly feel overwhelmingly parched. And even if the babbling brook nearby looks crystal clear, you never know what microscopic bacteria is hiding in plain sight.
LifeStraw makes it possible for you to access clean drinking water everywhere with its portable Personal Water Filter. Although it’s only 9 inches long and weighs less than 3 ounces, the filter can treat up to 4,000 liters of contaminated water—all without using chlorine, iodine, or other chemicals. Instead, the internal membrane microfilter is dotted with pores that measure 0.2 micron, which is so small that virtually no waterborne bacteria, protozoan parasites, or other contaminants can squeeze through. (For comparison, a human hair measures 25 microns or more.)
While the LifeStraw can’t filter water to store for later, given that you have to suck water through it manually (there’s no pump), we found during our testing that it makes for an excellent backup source of taste-free water with zero waiting time. Its lightweight and compact size can slip nicely into your jacket pocket or daypack, so even if you typically bring enough water with you on your hikes and camping trips, it’s not a bad idea to pack the LifeStraw in case of emergency. Hikers have even credited a LifeStraw with saving their lives.
Normally retailing for about $20, LifeStraw is slashing the filter’s price by 50% for the duration of Amazon Prime Day. Chances are, you’ve spent more money on a reusable water bottle that doesn’t even have a built-in filtration system. During the two-day event, the company is also offering discounts on its other filtration systems that you can use at home or farther afield.
Shop more great Prime Day sales before it ends Wednesday night.
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