Osprey Eja 58 backpack review

A backpacker at Evolution Lake on the John Muir Trail in Evolution Basin, Kings Canyon National Park.

The Best Backpacking Gear for the John Muir Trail

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By Michael Lanza

So you’re planning to thru-hike the John Muir Trail and making all of the necessary preparations, and now you’re wondering: What’s the best gear for a JMT hike? Having thru-hiked the JMT as well as taken numerous other backpacking trips all over the High Sierra—mostly between late August and late September, which I consider that the best time to walk the Sierra, to avoid snow and the voracious mosquitoes and blazing hot afternoons of mid-summer—I offer the following picks for the best ultralight and lightweight backpacking gear and apparel for a JMT thru-hike.

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A backpacker descending from Texas Pass into the Cirque of the Towers in the Wind River Range, Wyoming.

The 10 Best Backpacking Packs of 2025

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By Michael Lanza

Backpacks come in many sizes and designs for a reason: so do backpackers. Some of us need a pack for moderate loads, some for heavy loads, and others, increasingly, for lightweight or ultralight backpacking. Some prefer a minimalist pack, others a range of features and access. Everyone wants the best possible fit and comfort, and almost everyone has a budget. But no matter which type of backpacker you are, this review covers the best packs in each of those categories.

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A backpacker hiking the Dawson Pass Trail above Pitamakan Pass in Glacier National Park.

The Best Ultralight Backpacks of 2025

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By Michael Lanza

Do you need an ultralight backpack? Many backpackers might answer “no” when, for many reasons, their answer should logically be “yes.” These packs aren’t just for thru-hikers. Typically weighing roughly from under two pounds to under three pounds (empty), ultralight packs have support for carrying 25 to as much as 35 pounds—making them ideal for more than just ultralight backpacking. For many or even most backpackers, that represents the range of pack weight they either carry on most trips—or could carry on most trips, with smart packing and reasonably light gear.

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The Osprey Exos 58 ultralight backpack.

Review: Osprey Exos 58 and Eja 58 Ultralight Backpacks

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Ultralight Backpack
Osprey Exos 58 and Eja 58
$260, 58L/3,539 c.i., 2 lbs. 14 oz./1.3kg (men’s medium)
Sizes: men’s S/M and L/XL, women’s XS/X and M/L
Exos: backcountry.com
Eja: osprey.com

Osprey’s men’s Exos and women’s Eja packs would seem like shining examples of gear proven to perform so well for so long that redesigning them risks customer backlash. As a longtime fan of the packs, I was eager to take the Exos 58 on a long cruise—nine days and nearly 130 miles through the High Sierra in August, mostly on the John Muir Trail with some on- and off-trail detours. I came away from that walk convinced that, with what they changed and what they kept in the Exos/Eja, Osprey done made these packs even better.

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The Osprey Exos 58 in Glacier National Park.

Gear Review: Osprey Exos 58 and Eja 58 Ultralight Backpacks

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Ultralight Backpack
Osprey Exos 58 and Eja 58
$240, 58L/3,539 c.i., 2 lbs. 11 oz. (men’s medium Exos)
Sizes: men’s Exos S-L, women’s Eja XS-M
backcountry.com

It’s difficult and sometimes dangerous to improve on a piece of gear that’s nearly perfect in its simplicity and functionality. So when Osprey rolled out the redesigned Exos for 2018, along with a women’s version, the Eja, with some changes to this popular model—which became an ultralight pack archetype when it was introduced in 2008—I immediately wanted to see whether the changes represent an improvement. Taking it on a six-day, 94-mile hike on the Continental Divide Trail through Glacier National Park, I found definite improvements—including that it carries better than the previous iteration—and I think some backpackers may miss one convenient feature that’s absent from the updated pack.

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