Osprey Exos 48 Pack Review

Osprey Exos 48 Field-test and Review

There’s something about the weight of a pack—the way it presses into your hips as you begin a journey. It’s a feeling that can either be a burden or a comfort, depending on how well it’s designed. On my recent hikes through Tasmania’s wild landscapes—from the jagged peaks of the Du Cane Range to the sweeping views over Freycinet Peninsula—my Osprey Exos 48 became a trusted companion. It didn’t weigh me down, but instead, seemed to work with me, keeping my essentials close at hand while I lost myself in the rhythm of the trail.

After months of field-testing the Osprey Exos 48, I’m excited to share my thoughts on this overnight and multi-day hiking pack. With trails ranging from rugged mountains to coastal vistas, I’ve put the Exos 48 to the test in diverse conditions. For context, my previous experience with Osprey packs includes the Aether AG™ 70, which I reviewed back in 2017. That pack left a lasting impression, and I was curious to see how the Exos 48 would measure up. Here’s what I found.

First Impressions: A Lightweight Companion

The Exos 48 immediately stood out for its balance of weight and functionality. Weighing just 1.29 kg (for the S/M size), it’s an excellent choice for those who prioritise a lightweight pack without compromising on essential features. With 48 litres of space, it’s ideal for hikers who pack efficiently but still need room for their gear. If you require more capacity, the Exos also comes in a 58-litre version (load range 11-14 kg), or for those who prefer a more compact option, there’s a 38-litre model (load range 9-11 kg).

When I first put it on, the Exos 48 felt streamlined, with a snug, ergonomic fit. There’s something satisfying about knowing your pack isn’t too bulky while still being capable of carrying everything you need for an extended hike. The slim profile, aided by the ExoForm harness and Ultralight AirSpeed® suspension, means it hugs the body well, providing good balance when carrying a moderate load.

What really impressed me, though, was how the AirSpeed® suspension kept me cool with maximum airflow between the pack and my back. I’ve tested a lot of packs that claim to allow airflow, but more often than not, when the pack is fully loaded, the mesh compresses, causing the pack to sit directly against your back. That wasn’t the case with the Exos 48. My back suffered minimal perspiration, and the airflow really did make a difference. Plus, it’s made with 100% recycled materials, which is a nice bonus for those of us looking to reduce our environmental footprint.

When testing the Exos 48, I noticed a minor design change from earlier models that could affect those who use a pack cover. The lower section of the suspension is now attached directly to the pack, which can make it tricky to secure a cover properly. In previous versions, the cover’s strap could be threaded underneath the suspension for a snug fit, but with this update, that’s no longer an option. As a result, you’ll either need to leave the cover slightly unsecured or consider using a larger cover with an extended strap to compensate. I have a large pack cover, so it has never been an issue for me, just something to be mindful of if your pack cover is a snug fit.

Comfort and Fit: Customisable Adjustments

The pack is available in two torso lengths, so the first step is determining the right size by measuring your torso. A useful feature of this model is the ability to fine-tune the suspension length for a more customised fit. Once adjusted, it stays in place, meaning you won’t have to think about it again—but it’s a great feature for dialing in comfort from the start.

The heaviest load I’ve carried in this pack was around 16kg, mainly in situations where I needed to bring extra water due to uncertain sources. While the recommended weight range is 11-14kg, I found it remained comfortable up to about 16kg. If you’re regularly carrying more than that, you’d likely be considering a larger-capacity pack, such as a 60-70-litre model, for better weight distribution and storage.

ExoForm Harness

The ExoForm harness offers excellent comfort, largely due to its seamless, layered mesh design. It’s breathable and soft, reducing discomfort during long treks. The mesh construction also improves cushioning, a key feature on multi-day hikes like the ones I did in Tasmania.

One of the standout features here is the two injection-moulded adjustment ladders. These ladders allow for an easy torso length adjustment, ensuring the pack fits a range of body types. I personally appreciated how simple it was to tweak the torso length while on the move. Adjusting the harness to the right length is intuitive – just slide it up or down the LightWire frame, lock it into place, and you’re good to go.

ExoForm Hipbelt

The hipbelt on the Exos 48 deserves a mention as well. It’s adjustable, comfortable, and stays in place even after hours of hiking. The ErgoPull cross-body buckle makes tightening or loosening the belt straightforward, which is crucial for finding that sweet spot between a snug fit and enough room for movement. During my 4-day hikes, the hipbelt remained comfortably in place, with no rubbing or painful pressure points.

While the padding is relatively lightweight, it offers more than enough cushioning to avoid any hip bruising. It’s a great option for those who like their pack’s weight distributed comfortably across the hips.

Storage and Organisation: Thoughtful Features

The Exos 48 offers a variety of thoughtful storage solutions, making it easy to organise your gear and access it on the go.

Top Lid and Attachment Points

The removable floating lid (AKA brain) is a standout feature. I use it to carry gear I need access to regularly, like my torch, power bank, sunscreen, and sunglasses. It’s a real bonus when you’re on the trail and need to grab something quickly. Plus, the lid has dual upper side compression straps with quick-release buckles, which helps keep your load stable and tight. For those who prefer lidless use, Osprey has included a FlapJacket cover. I didn’t often use it because I like having the lid on for multi-day trips, but it’s handy for those times when you want to travel lighter.

Hydration and Quick Access

If you prefer hydration bladders, the Exos 48 has an internal sleeve for your reservoir, with a hose port at the centre back. I typically use separate water bottles, but the bladder system worked well during testing. It’s worth noting that a full water bladder does make the pack feel a bit less accessible, especially when it comes to accessing the lower compartment. However, when packed properly, it ensures even weight distribution.

The front stretch mesh pocket is one of my favourite features. It’s perfect for stashing quick-access gear like my rain jacket or camp sandals. I’ve also used it for wet gear like my fly and rain cover. It’s one of those pockets you’ll find yourself using often.

Side Pockets and Compression Straps

The side-entry pocket design on the Osprey packs is fantastic. Being able to grab and stow a bottle without taking your pack off makes a huge difference in keeping up regular hydration. Julie and I usually hike together, so it’s pretty easy to share bottles or grab the other person’s from side packs when needed. I’ve used a few other brands with top-of-pocket access, but Osprey really seems to have nailed it with the opening along the leading edge. I can simply reach back and grab my own bottle. When I first started wearing Osprey packs, I was still inserting my bottles from the top, but the side entry makes life so much easier. A huge selling point for me. The dual-access stretch mesh side pockets are spacious enough to fit my 1.5L water bottles, but they’re also versatile enough to hold tent poles or hiking poles without issue. This flexibility, being able to easily access gear from both the top or side, even while wearing the pack, adds a level of convenience that I appreciate on the trail.

However, one downside I encountered was that the stretch mesh can snag on vegetation. On a recent multi-day hike through the Du Cane Range in Tasmania, I wasn’t lucky enough to avoid the typical Tassie bush, and a few small holes tore in the mesh, which I’ll have to figure out how to repair. Still, it’s a small trade-off for the convenience and capacity these pockets offer. I’ve worn other packs and was quite disappointed in their side pockets, which were so low-cut that I had to clip my bottles in place with a carabiner for fear they would fall out, or so deep there was no way I could get the bottle out without removing my pack.

The dual strippable side compression straps are another great feature, allowing me to secure extra gear or stabilise my load when I don’t need full compression. Given the volume of the pack and the compact gear I carry, I don’t often find the need to use the compression straps to shrink the load within the pack. Instead, I’ve used them to secure my water bottles, hiking poles, and tent poles by attaching them to the webbing with a lightweight carabiner.

Durability and Performance: Built for Adventure

The Exos 48 is designed for rugged conditions, but as with any lightweight pack, there are a few things to keep in mind. The stretch mesh pockets, while convenient, are more susceptible to damage than sturdier materials. As mentioned earlier, I ended up with a couple of small snags from vegetation, so it’s something to be mindful of. On the plus side, the rest of the pack’s construction is solid, featuring bluesign® approved recycled high-tenacity nylon ripstop with a PFC/PFAS-free DWR coating for added durability and water resistance. The base uses the same 100D nylon ripstop as the main fabric, while the accents are reinforced with 400D high-tenacity nylon, offering extra toughness in high-wear areas. After all I’ve dragged this pack through so far, it is holding up really well.

In terms of functionality, the Exos 48 holds its own on tough terrain. I’ve used it across diverse conditions—from stretches of sandy beaches and rocky scrambles to wet, muddy trails—and it’s held up well. The LightWire frame provides strength without adding unnecessary weight, and the well-designed suspension ensures a comfortable carry even when fully loaded. The compact profile also helps with balance, especially during off-trail sections.

Special Features: Extras That Matter

Ice Axe Loops and Trekking Pole Attachment

The Exos 48 comes with dual ice axe loops, which are perfect for those who hike in alpine regions. I haven’t had a chance to test these in alpine winter conditions yet, but they seem to work well based on my tests at home. Additionally, the Stow-on-the-Go trekking pole attachment is an innovative feature. It allows you to quickly stash poles while wearing the pack. I used it occasionally when I needed both hands free for scrambling, although I have to admit, I often opted to stash my poles in the side pockets out of habit.

Hipbelt Pockets

The dual zippered hipbelt pockets are a practical addition, perfect for keeping small essentials like snacks, a whistle, or a PLB within easy reach. While they aren’t the largest, they’re a feature I always appreciate—especially since I have a few packs without them, and I definitely miss the convenience. I typically use hip pockets for carrying snacks, a compass, and my whistle, and sometimes my PLB when it’s not attached to my pack harness. Given the other storage options on the Exos 48, these pockets do their job well.

Osprey Exos 48 Backpack – Pros & Cons

What I love:

• Lightweight & Comfortable: Weighs only 1.29 kg, making it ideal for multi-day hikes.
• Breathable Suspension: AirSpeed® suspension prevents excessive back sweat.
• Customisable Fit: Adjustable torso length and ergonomic ExoForm harness ensure a snug fit.
• Supportive Hipbelt: Stays secure without rubbing or causing discomfort.
• Thoughtful Storage: Includes a removable floating lid, stretch mesh front pocket, and hydration bladder sleeve.
• Side Pockets with Dual Access: Easy reach for water bottles and trekking poles.
• Durable Materials: Made from high-tenacity recycled nylon with reinforced high-wear areas.
• Eco-Friendly: Uses bluesign® approved materials and PFC/PFAS-free water resistance.
• Versatile Compression Straps: Can be used for securing extra gear.
• Trekking Pole & Ice Axe Loops: Convenient for alpine hikers and technical routes.
• FlapJacket Cover: Provides an alternative to the removable top lid.

Things to be mindful of:

• Limited Load Capacity: Recommended weight range of 11-14 kg; although I am confident it can handle a lot more.
• Mesh Side Pockets Are Fragile: Can snag and tear on rough vegetation.
• Suspension Design Affects Pack Cover Fit: Makes it harder to secure rain covers snugly.
• Hipbelt Pockets Could Be Larger: Limited space for bulkier items.
• Water Bladder Storage Can Reduce Accessibility: A full bladder slightly limits access to lower compartments.

Tech Specs

• Cubic Inches: S/M 2929, L/XL 3112
• Litres: S/M 48, L/XL 51
• Weight: S/M 1.29 kg (2.84 lbs), L/XL 1.33 kg (2.94 lbs)
• Dimensions:
  S/M:  75h x 36w x 30d cm (30h x 14w x 12d in.)
  L/XL:  79h x 40w x 32d cm (31h x 16w x 13d in.)
• Load Range: 11-14 kg (25-30 lb)
• Add-On Options: 3L Reservoir, Raincover (M)

Final Thoughts: A Pack That Delivers

The Osprey Exos 48 is a well-designed, functional pack that offers a solid balance of lightness, comfort, and durability. It’s perfect for hikers looking for a versatile, compact option for multi-day adventures. Despite its lightweight design, it still offers ample storage and the kind of organisational features that make packing a breeze.

I found it to be a dependable companion on my hikes, and its thoughtful features—like the adjustable harness, ample attachment points, and stretch mesh pockets—have made it a go-to for my adventures. Whether you’re heading out for a few days or just need a solid overnight pack, the Exos 48 is a great option to consider.

It’s easy to get lost in the journey itself—the crisp air, the ever-changing light as the sun dips below the horizon. But the pack is never far from your thoughts, particularly when it feels like it’s part of the experience. The Osprey Exos 48 does that. It doesn’t try to stand out; it doesn’t need to. But as you settle into camp after a day of hiking, you can’t help but feel a quiet gratitude for the way it made the day a little easier. It’s a pack designed for those who want to carry a little less weight, a little more freedom, and everything they need to explore further.

For those looking for a women’s-specific fit, Osprey also offers the Eja, which my wife has and loves. That said, don’t rule out the Exos just because it’s not labeled as a ‘women’s pack’—fit and comfort matter more than marketing, so it’s always worth trying both to see what works best for you.

So, if you’re looking for a lightweight companion that won’t weigh you down, a pack that fits like a second skin, and offers just enough organisation for the essentials, the Exos 48 is worth every step of the journey. Check it out on the Osprey website here.