My Honest Osprey Eja Backpack Review (Pros & Cons)

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Osprey Eja is best for:

• Backpackers of all skill levels
• Trips of varying length 
• Ultra-light enthusiasts

Osprey Eja might not be a fit for:

• Loads greater than 35 lbs (15.9 kg) and/or 58 liters of volume
• Budget shoppers 

Overall, I’ve rated the Osprey Eja 4.9 out of 5 stars.It’s impressively lightweight yet durable and fully made with recycled and eco-friendly materials. The backpack addresses both function and fashion with technical features and design elements that pop. 

As a 5-foot female weighing 100 lbs (152.4 cm, 45.4 kg), finding a backpack that fits is often a challenge. I love that this Osprey series includes two sizes per gender model, creating a custom-like fit. This, along with padding and ventilation, creates an unparalleled level of comfort. 

To top it off, Osprey’s “All Mighty Guarantee” is highly generous. It’s unlikely that buckles will break or fabric will tear anytime soon after purchasing. But even after a few years or a few hundred miles of use, Osprey will repair any damages, free of charge.

In honesty, it was hard to find faults with this product. Arguably, the backpack is more expensive than similar competitors. But in fairness, the value is nearly on par, in my opinion. 

However, given the price and the fact that the bag isn’t waterproof, I think that a rain cover should have been included. It’s an essential tool, and if you go with this pack, I highly recommend buying one separately. Osprey sells a variety of rain cover sizes on its website. 

The mouth to the main compartment is maybe more narrow than preferred. The same could be said for the hip belt pockets, as the zippers could have extended further. And, while the lid is removable, clips on attachment points (as seen on the REI Co-op Flash 55) would have been less tricky than the backside straps.

But, that’s being painstakingly nit-picky. Overall, my experience with the Osprey Eja 48 is hard to beat.  

For this review, I tested the Osprey Eja 48 in the extra small/small size. However, the pros and cons outlined apply to the entire Osprey Eja (women’s) and Osprey Exos (men’s) series.

If the Osprey Eja / Exos series isn’t ideal for your needs, see the Alternatives section below for more personally-tested options.

Video Review Osprey Eja

You can keep scrolling for my detailed Osprey Eja review.

Or  click play on my video review rounding up the  8 top backpacking backpacks I compared on our trip in Utah.

(Note: the Osprey Eja section starts at 07:12 in the video).

Osprey Eja Features Review

That’s a quick summary of my review. Now, let’s dive into all the details of the Osprey Eja. Below, I discuss organization, comfort, and other technical aspects that make this one of the best backpacking packs.   

Here’s an overview of the Osprey Eja features that I’ll cover in this section:

Size

⭐ STAR RATING: 5 / 5 stars

At first glance, I was doubtful that the Osprey Eja 48 would be a personal favorite. I don’t have the most ultralight gear, and the mouth of the pack seemed quite narrow. But as I loaded up, I was amazed at how much this 48L pack can hold. 

If you’re curious how exactly these 48 liters are dispersed throughout the pack, I have answers. I took inspiration from the standardized capacity test by ASTM International and ordered hundreds of golf balls. After determining that there are roughly 12 golf balls per liter, I measured the following volume estimates:

• Hip belt pockets (2x) – 8 golf balls / 0.67L per 
• Side pockets (2x) – 44 golf balls / 3.67L per
• Lid, external pocket – 70 golf balls / 5.83L 
• Lid, internal pocket (with the top pocket extended) – 50 golf balls / 4.17L
• Front pocket (with the main compartment extended) – 78 golf balls / 6.5L 
• Main compartment – 238 golf balls / 19.82L  

This test made me realize the incredible spaciousness of the pack’s lid. The internal and external compartments hold 10L, which is more than 20% of the pack’s total capacity. The mesh water bottle pockets were also surprisingly spacious, contributing over 7L combined.

If you’re curious how this distribution compares to other packs, see the chart on our “Best Backpacking Packs” guide.

Weight

⭐ STAR RATING: 5 / 5 stars

The extra small/small size of the Osprey Eja 48 weighs 2.666 lbs (1.209 kg). The model’s medium/large size weighs 2.758 lbs (1.251 kg) but also grants three extra liters of storage. See the Technical Specifications section for weights associated with all Osprey Eja and Osprey Exos sizes and models. 

Regardless of your preferred version, it’s an impressively lightweight pack. Even its heaviest model, the Osprey Exos 58, is only 2.941 lbs (1.334 kg). Most would agree that this is a very manageable weight, especially for the sake of durability and comfort. 

Lightweight backpackers may want to consider the Pro models of the Eja and Exos. These 55L backpacks range between 1.927 lbs (0.874 kg) and 2.165 lbs (0.982 kg) without sacrificing quality.

Also, note that all versions feature a removable lid, allowing you to shed excess weight. If you opt for this modification, simply buckle down the integrated flap jacket to secure your gear. 

Height Adjustable

⭐ STAR RATING: 5 / 5 stars

All versions of the Osprey Eja and Exos feature an “injection-molded ladder adjustment system.” This allows the user to adjust the torso length by four inches, accommodating a range of heights. 

Being 5 feet tall (152.4 centimeters), I often struggle to find a backpack that fits my body type. But the extra small/small size of the Osprey Eja is so comfortable, it feels almost custom to me.

Others that fall outside standard height and build will likely prefer this Osprey series over “one size fits all” packs. Plus, the ladder adjustment feature is very intuitive and easy to use. No double-sided velcro — it’s just a quick latch insert and you’re ready to hit the trail.    

Comfort

⭐ STAR RATING: 5 / 5 stars

After personally testing the Osprey Eja 48, I can say with confidence that it’s extremely comfortable. Its lightweight design relates to this feature. The same can be said for its suspension system, having a highly breathable mesh back. It also has padding on the shoulder straps and hip belt — which is also curved and extended to help with load transfer. 

But in my opinion, the real game-changer is that the Osprey Eja and Exos series are designed to fit you. With two sizes per gender model, you’ll likely find this pack to be more comfortable than competitors, too.

⛰️ Love the Views? I tested this pack in the Lake Mead National Recreation Area. Discover more scenic Nevada spots by reading Isabelle’s “ Day Trips from Las Vegas” guide!   

Internal Organization

⭐ STAR RATING: 5 / 5 stars

Like similar technical backpacks, the pack’s main compartment is largely simplistic. Inside, you’ll find a singular pocket — a hydration sleeve that includes a versatile looped buckle. This keeps a water pouch in place, regardless of brand or style. You can then pull the hose through a back panel port, found top and center. 

When first opening the main compartment, which can only be top loaded, I was surprised by its narrow mouth. But I didn’t find packing or accessing gear to be difficult and was impressed by how much the pack can hold.  

The backpack features several compression straps, one of which is the red strap pictured above. Use this to help squeeze in heavier loads. If the floating lid is attached, the integrated flap jacket is tucked in, then cinched with a drawstring.

The lid features a zippered internal mesh pocket. Inside this pocket, you’ll find a bright red latch that provides a safe, secure place for your keys. The lid also features a separate external pocket, great for items you may want to access quickly like a headlamp and first aid kit.

📚 Related Reading: How you load your pack hugely influences comfort. See REI’s guide on how to pack your backpack like a pro! 

External Organization

⭐ STAR RATING: 5 / 5 stars

The Osprey Eja and Exos series allow for significant external storage. A tensioned mesh pocket extends across the front face of the backpack. The mouth of this pocket has an elastic band, helping to keep items in place. 

The same elastic security is seen on the two side mesh pockets, which also feature compression straps. These mesh pockets are great for storing water bottles, including wide styles like those by Nalgene.Side access allows you to conveniently remove and replace your bottle without taking off the pack.  

The backpack also features two reasonably spacious pockets on both sides of the hip belt. Though these openings are a bit too small for my Otterbox-protected iPhone, they’re great for stashing trail snacks and other small items. 

This backpack also features numerous loops and straps for storing gear. At the base of the pack, you’ll find two straps for storing larger items like your tent, sleeping bag, or sleeping pad. If you’re all about ultralight packs, you’ll be pleased to know that these straps are removable. 

Low on the left shoulder strap, there’s a trekking pole attachment. Stretch this loop over your trekking pole handles. Then, secure the ends of the poles with the elastic loop found at the left base of the pack.   

Adjacent to the side mesh pockets are two ice axe loops, each with a bungee tie-off. Compression straps and web lash points on the body and lid of the pack grant even more external storage. 

Materials

⭐ STAR RATING: 5 / 5 stars

The 38L, 48L, and 58L versions of the Osprey Eja and Exos are made with 100% recycled materials.Their fabrics are also made with a PFC/PFAS-free DWR. This means that the water-repellent finish is eco-friendly. Many competing products leach harmful chemicals into the environment. 

In addition, the main fabric and bottom fabrics are recycled 100D nylon ripstop. The accent fabric is recycled 400D nylon. “D” refers to denier, the thickness of the fabric. The higher the number, the thicker the material. 

Though the pack’s main and bottom fabrics are on the thin side, this makes the pack lightweight. Plus, with ripstop construction (seen in the subtle grid pattern), the backpack has impressive tear strength. 

Meanwhile, the Pro models feature a proprietary fabric: NanoFly™. This is made with 100D Nylon x 200D UHMWPE ripstop. “UHMWPE” stands for ultra-high molecular weight polyethylene. Essentially, this is an extremely durable, lightweight plastic. Though the Pro model isn”t made with recycled materials, its DWR is PFAS-free. 

Hardware

⭐ STAR RATING: 5 / 5 stars

All the buckles, clips, pulls, and zippers on the Osprey Eja are made with quality. They’re secure, latch smoothly, and are built to last. The sternum strap whistle is also high functioning. 

You’ll notice that the zippered pockets, including the hip belt pockets and lid pockets, don’t feature metal pulls. Rather, they’re made with fabric and plastic, which cuts down on weight and if needed, makes replacement easy. 

See more about part replacement in the Warranty section of this guide. 

Aesthetic

⭐ STAR RATING: 5 / 5 stars

Most outdoor enthusiasts would agree that Osprey checks the boxes for both fashion and function. In my opinion, this pack is sleek, top to bottom.  

When it comes to backpacks, one of my pet peeves is when brands let straps hang. But this pack allows you to tuck in its thin straps, creating a “put together” look. The main fabric has a subtle grid pattern and a lovely gloss, and the accent fabric adds color dimension. 

And, I’ll say it one more time: this pack is made to fit your body. Most backpacking packs make me look like an elementary schooler with a book bag too big. Rather, the extra small/small Osprey Eja looked suitable on my frame, giving it even more style points. 

Warranty

⭐ STAR RATING: 5 / 5 stars

Osprey’s All Mighty Guarantee is generous, to say the least. Regardless of when or where you purchased your Osprey backpack, the company “will repair any damage or defect for any reason free of charge.” If it cannot address a functional repair, Osprey will replace the bag.

Currently, backpack repair takes 6-10 weeks, not including shipping. If you have a trip coming up and need a major fix, plan ahead. But if all you need is a new buckle, webbing, or other parts that are easy to DIY, Osprey is also willing to send a self-repair kit. 

I’ve had Osprey backpacks for years and fortunately, have never needed a repair. So, I can’t personally attest to its customer service. However, I would expect its large, professional team to fully stand by its warranty.   

Value

⭐ STAR RATING: 4.5 / 5 stars

Overall, I think the Osprey Eja and Exos are priced fairly. The 48L model’s $240 price tag is largely justified by its incredible construction and features. Plus, its lifetime warranty makes the investment feel more worthwhile. 

However, for this cost, I would have expected a rain cover to be included. Buying the recommended rain cover by Osprey will set you back at least another $37. Though, if you’re looking for a deal, check out this budget rain cover that costs $13.99.  

Osprey Eja Technical Specifications 

The below tables allow you to easily compare the entire Osprey Eja (women’s) and Osprey Exos (men’s) backpack series. Both have 38L, 48L, and 58L models, in addition to Pro models with extra features. Plus, each version is available in two sizes to help ensure the perfect fit. 

Technical Specs Comparison Chart – Osprey Eja (women’s version)

Technical Specs Comparison Chart – Osprey Exos (men’s version)

Osprey Eja Alternatives

Undeniably, I’m in love with my Osprey Eja 48. However, this backpack may not be the best pick for every consumer. Here are a few alternatives for you to consider: 

Osprey Aura / Atmos AG LT 65

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Skycie tested the Osprey Aura AG LT 65 on our recent trip. Overall, one of her favorite features was the spaciousness of this pack. The largest version of the Osprey Eja may be 58L, but as backpackers know, 7 extra liters of volume is significant. 

Plus, the Osprey Eja 58 has a weight capacity limit of 35 lbs (15.9 kg). Meanwhile, the Aura AG LT 65 can carry up to 40 lbs (18.1 kg). The same applies to the men’s version, the Atmos AG LT 65.

If you’re thru-hiking and need extra storage, this larger Osprey pack is a great alternative. Read the full Osprey Aura backpack review to decide if it’s an ideal pick for you.  

TETON Sports Scout

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In terms of value, I think the Osprey Eja and Exos series is fairly on point. However, if you’re new to backpacking, maybe you’re not ready to invest $220+ in your pack. Of course, there’s plenty of other gear you’ll need to purchase, too. 

In my opinion, the TETON Sports Scout is a fantastic budget pick. It has solid features like torso adjustability, several pockets, and a sleeping bag compartment. Plus, all sizes (45L, 55L, and 65L) ship quickly via Amazon and cost between $84.99 – $94.99.  

For all this pack’s pros and cons, read my full TETON Sports Scout review.

FINAL VERDICT – Is The Osprey Eja Worth It?

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After personally testing the backpack out on the trail, I can confirm that the Osprey Eja and Exos series is absolutely worth it. 

Its lightweight, eco-friendly materials are made to withstand the elements. Plus, the pack is unparalleled when it comes to comfort. Gender-specific sizes and the height adjustable feature make the pack feel almost custom fit. It’s stylish, clearly made for technical use, and backed by a generous warranty. 

However, I wish that the backpack came with a rain cover given its price point. In addition, the main compartment and hip belt pockets maybe could have been a touch wider. And, perhaps the removable lid could have been a bit more user-friendly.

Though, my qualms are very minor. I would recommend the Osprey Eja / Exos to just about any backpacker ready to make the investment. It’s a trail companion that I look forward to having for many years to come.

FAQs About the Osprey Eja

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Thanks for reading my honest Osprey Eja backpack review! I hope you found this information to be insightful. Happy hiking! 

EJA 48

A great pick for new backpackers and seasoned thru-hikers alike. This technical, eco-friendly pack is both durable and lightweight. It’s incredibly comfortable and available in several sizes.

Product Brand: Osprey

Editor”s Rating:
4.9

Pros

• Lightweight, durable, and eco-friendly materials
• Thoughtful technical features
• Great internal and external organization
• Comfortable, custom-like fit
• Covered under Osprey’s “All Mighty Guarantee”

Cons

• Somewhat more expensive than competitors
• Raincover not included
• Some features could be more functional