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What We’re Testing Now: This Purifying Water Bottle Is an Effortless Dayhiking Filter

A speedy flow rate and ease of use make the the Camelbak Eddy + Lifestraw bottle a winner.

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For an overnight trip, a water filter is a no-brainer. But on a longer than expected dayhike, I usually find myself wishing I had a way to top off my bottles. I always say I’m going to pack a water filter when I’m out for a dayhike or long bike ride, but it often feels like an unnecessary extra. What I love so much about the new CamelBak Eddy + filtered by Lifestraw Bottle is that it doesn’t feel like packing something extra, since I’ll sip from it all day long even when I’m not filtering water. 

The Eddy + Lifestraw bottle makes a strong case for bringing a water filter along more often than not: It integrates a Lifestraw filter right into CamelBak’s classic 32-ounce and 20-ounce Eddy+ bottle. Water is filtered twice, with a hollow fiber filter (pore size is 0.2 microns) that removes bacteria, parasites, and microplastics, and an ion exchange filter which reduces lead, unwanted tastes, chlorine, and other chemicals. The filter is removable, so you can use it as a regular bottle when you’re not filling up on the trail, but because you’ll be putting unfiltered water in the bottle, be sure to wash it out frequently. 

One tester took it along during a hike through the Enchantments, and used it as a standard water bottle for the first half of the day, then filled up at three streams during a long, slow 12-mile walk back out. 

Unlike other bottle filters, the flow of water when sipping is smooth and pretty effortless. I tried the Lifestraw Go a few years back, which was a similar idea, but it was frustrating to drink from because of how hard it was to draw the water through the system without a lot of force. The Eddy + Lifestraw’s improved flow rate is due to the ion exchange filter, instead of an activated carbon filter.

We’ve been testing the 32-ounce bottle (which holds 27 ounces of water with the filter inside), but it also comes in a 20-ounce version. There’s also a vacuum-sealed 32-ounce option ($70), if you’re looking for something insulated and don’t mind the extra weight. 

$50, 9.5 oz. Buy Now