Osprey Exos 48 Review

Overview

The Osprey Exos 48 is a mid-size framed ultralight pack that has been a fixture on trails from the AT to the Sierra Nevada for years — and its 2022 redesign made an already solid pack meaningfully better. It sits at the crossover between the ultralight and lightweight backpacking worlds, best suited to backpackers whose loads usually range from 20 to 35 pounds. If you’re transitioning away from a beefy 65L trail-crusher and want real suspension without going full cottage-industry, this is the pack the industry keeps pointing you toward.

Key Specs

Spec	Value
Weight	1,255 g (44.3 oz)
Volume	48 L
Dimensions	29.53H × 14.17W × 11.81D in
Load Range	25–30 lbs (manufacturer rated)
Torso Adjustability	4 in (S/M and L/XL sizes)
Frame	6065 aluminum LightWire
Suspension	AirSpeed tensioned mesh back panel
Harness	ExoForm gel/mesh shoulder straps
Main Fabric	Bluesign® approved recycled 100D high tenacity nylon ripstop
DWR	PFC/PFAS-free
Hip Belt Pockets	Yes (2, zippered)
Hydration Compatible	Yes (sleeve + port)
MSRP	$260
Comparison	See how Exos 48 compares to similar gear

Performance

Ventilation & Carry Comfort

This is where the Exos earns its reputation. The AirSpeed suspension system uses a peripheral frame rod combined with a tensioned mesh back panel to create actual space between your back and the pack body — and on a 90-degree day climbing out of a river valley, that ventilation makes a noticeable difference. I’ve put a suspended-mesh pack next to a foam-contact pack on the same hot climb; the sweat differential is real, not just marketing copy.

The biggest positive is the carry quality at medium-weight loads (20–30 pounds) — it’s extremely comfortable in that range and distributes the load as effectively as any other lightweight pack.

The hip belt does a solid job of transferring weight onto the hips, making 25 pounds feel lighter than it actually is.

That said,

the pack really shines with total pack weights between 20–28 pounds; under 20 pounds you barely notice it, at 28 it carries well but you start feeling the suspension working, and above 30 pounds the ultralight construction begins to compromise comfort.

Osprey claims 20–40 lbs; real-world testing suggests the upper number is optimistic. Plan your kit accordingly.

The 2022 Redesign

If you’ve been working off reviews from before 2022, some of what you’ve read is stale. The AirSpeed suspension system saw an upgrade with a stronger mesh aimed at increasing durability for thru-hikers, and a new ladder adjustment system delivers up to four inches of torso adjustability. The pack is now only available in two split sizes — S/M and L/XL — and adds two hip belt pockets, built with bluesign-approved recycled 100D high tenacity nylon ripstop with PFC/PFAS-free DWR coating.

The hip belt pockets deserve a specific mention because they were a saga. From 2018–2021, Osprey removed hip belt pockets from the Exos line to save weight — backpackers hated this decision, and it was arguably the most criticized aspect of an otherwise excellent pack. Starting with the 2022 models, Osprey listened and restored them. They’re back, but manage expectations: they’re not huge — you’ll fit a smartphone and some snacks, but not much more — and some users still find them smaller than ideal, especially with modern plus-sized phones. One REI reviewer specifically flagged that the hip pockets can feel nonfunctional, with the zipper practically impossible to close even when empty due to the curvature of the pocket. That’s not universal feedback, but it’s worth knowing before you buy.

Organization & Access

The only way into the main compartment is via the top loader and drawstring — there are no side-access zippers or a separate sleeping bag compartment at the bottom.

For ultralighters, that’s a feature; for those used to panel-loading packs, it takes some habit adjustment.

In order to get the most out of this bag, you have to be very intentional about how you pack everything — it can be tough to find the right balance between stuffing bulky/heavy items lower while also being able to access things throughout the day without pulling out half your stuff.

On the outside, the pack punches above its weight. Zig-zag compression straps run up both sides and can be routed inside or outside of the side pockets — a significant benefit when you want to reduce internal volume but still have full use of the side pockets. The Stow-on-the-Go trekking pole system actually works once you get the hang of it — you can attach or remove poles while walking without stopping.

Durability

Osprey addressed earlier mesh pocket durability issues in the newest line by adding a more rigid and durable mesh to the outside of the pack.

The 100D high tenacity nylon main body is sensibly burly for the weight class.

The one durability concern that comes up across multiple reviews is the thin plastic in the flexible areas of the hip and chest buckles — though replacement buckles are cheap and easy to source.

Osprey’s All Mighty Guarantee covers the pack for life regardless, which is worth factoring into the value equation.

Pros & Cons

Pros

• AirSpeed suspended mesh delivers class-leading back ventilation — genuinely noticeable on hot days
• Comfortable and well-balanced for loads in the 20–30 lb sweet spot
• Four inches of torso adjustability via injection-molded ladder system is more range than most competitors offer
• Hip belt pockets finally restored in the 2022+ version
• Bluesign-approved recycled 100D nylon with PFC/PFAS-free DWR — a meaningful ethical step
• Detachable lid + integrated FlapJacket gives you flexibility to shave weight on fast-and-light days
• Osprey’s All Mighty Guarantee provides lifetime repair or replacement
• Competitive pricing — around $260 vs $350+ for DCF alternatives

Cons

• At 1,255g (44.3 oz), it’s heavier than truly ultralight DCF options; you’re paying a weight premium for comfort
• Comfort noticeably degrades above 30–35 lbs — the manufacturer’s upper range is optimistic
• Top-load only: no bottom sleeping bag compartment, no side-access zipper
• Hip belt pockets are tight for larger modern phones; zipper ergonomics have frustrated some users
• Lid zipper opening is small and can make digging for small items annoying
• No rain cover included — the DWR buys you time, not real protection in sustained downpour

Who Should Buy This

The Exos 48 is best for lightweight backpackers carrying 20–35 lbs on multi-day trips who want superior ventilation and comfort without paying premium ultralight prices.

That’s three-season backpackers, AT and PCT section-hikers, and anyone coming from a traditional 60L+ pack who wants to lighten up without surrendering a functional suspension. It’s less suited to hardcore gram-counters chasing sub-10-oz packs or alpinists heading into winter conditions with 40+ lb loads.

There’s also a women’s version called the Eja 48, which features shoulder straps and a hip belt specifically designed for women’s bodies

— worth considering if you’re shopping for a partner or yourself.

Verdict

The Osprey Exos 48 is one of the most field-proven packs in the lightweight backpacking segment, and the 2022 redesign addressed the biggest real-world complaints without breaking what was already working. It’s not the lightest option on the market — a DCF frameless pack will beat it by 12–16 oz — but few packs at this weight carry as comfortably in the 20–30 lb range. It continues to be a strong choice for reasonably priced packs, scoring highly across versatility, availability, and feature set. If you know your loads will regularly push north of 35 lbs, step up to the Atmos AG. Everyone else should put this at the top of their shortlist.

Rating: 8/10