Osprey Exos 58L

Specifications

WeightVolumeMax LoadFrame TypeMaterialsMSRP
2 lb 13 oz58L35 lbsInternal AirSpeed suspension100D ripstop nylon$280.00

Comfort

The Osprey Exos 58 is designed for backpackers who want to go light without sacrificing comfort. At the core is the AirSpeed™ tensioned mesh backpanel, which suspends the pack away from your back to maximize airflow and reduce sweat buildup, a game changer on hot days and strenuous hikes. Despite its ultralight build, the Exos 58 includes a full aluminum frame that efficiently transfers weight to the hips, making it capable of carrying up to 35 pounds comfortably. The pack also features an easy-to-adjust torso system, allowing you to fine tune the fit as your hike progresses. Lightly padded shoulder straps and a breathable hipbelt lined with moisture-wicking mesh round out the comfort package, helping to prevent pressure points and chafing on long-mile days. In short, the Exos 58 proves that ultralight doesn’t have to mean uncomfortable.

Weight and Packing

The Osprey Exos 58 stands out in the ultralight pack category by offering an impressive blend of low weight and practical features. Weighing just 2 pounds 13 ounces (size S/M), it’s light enough for thru-hikes and fastpacking, yet retains thoughtful design elements that make it far more versatile than many minimalist alternatives. Osprey includes a removable floating lid with zippered pockets, and if you want to go even lighter, a built-in FlapJacket lets you ditch the lid entirely without sacrificing weather protection. The 58-liter capacity is supported by dual-access side mesh pockets, a large front shove-it pocket, zippered hipbelt pockets, sleeping pad straps, and external attachment points for tools or trekking poles. Add in a full internal hydration sleeve and side compression straps, and the Exos 58 proves you don’t have to give up convenience or function to go ultralight on the trail.

Price

At an MSRP of $280, the Exos 58 is a mid-tier option that offers great value with exceptional comfort and organization for the price. At this price range you’re getting AirSpeed™ mesh suspension, durable recycled materials, smart storage features like removable lid pockets, hipbelt and mesh compartments, and the reassurance of their All Mighty Guarantee.

Quality and Materials

Constructed from 100D/400D nylon, it balances durability with weight. The removable “brain” lid (packed or flapped) adds versatility, while dual side compression straps double as sleeping pad straps  . Osprey uses Bluesign-approved fabrics, PFC-free DWR finishes, and backs it with a lifetime warranty  . Durability tests report it performs well under typical backpacking abuse, though high-wear areas like mesh back panel and fabric edges should be minded  .

The Osprey Exos 58 is designed with ultralight efficiency in mind, but that doesn’t mean it skimps on quality. Built from 100% recycled, bluesign® approved nylon 100D for the body and reinforced 400D in high-stress areas, it strikes a careful balance between keeping weight low and ensuring trail-ready durability. A PFC-free DWR coating adds weather resistance without harmful chemicals, and the internal aluminum frame provides stable support for moderate loads. Despite its minimalist build, the Exos 58 feels solid in hand, with dependable buckles, reinforced stitching, and smart updates like zippered hipbelt pockets that add usability without extra bulk. Osprey’s well-earned reputation for craftsmanship shines through here, and it’s all backed by their All Mighty Guarantee, giving you long-term confidence in a pack built to go the distance.

Consumer Sentiment: Pros & Cons

Pros:

- Breathable, comfy AirSpeed suspension system

- Proper volume with great storage layout and hip belt pockets

- Solid ventilation even on hot, sweaty hikes

- Removable top lid for lighter setups

- Backed by Osprey’s All Mighty warranty

Cons:

- Slight “bounce” under heavier loads or high-impact movement

- Single top loading entry can limit rapid access compared to multi-zip designs

Comparison to Comparable Items

REI Co-op Flash 55: The Exos 58 offers better suspension and ventilation, while the Flash 55 is slightly lighter and more modular, appealing to budget-conscious ultralight hikers.

Hyperlite Mountain Gear Southwest 55L: Compared to the Exos 58, the Southwest 55L is more weatherproof and minimalist, but lacks the same ventilation and adjustability.

Granite Gear Crown3 60L: Both packs target the ultralight crowd, but the Exos 58 features a more breathable frame and fixed structure, while the Crown3 is more customizable with its removable frame sheet and optional hipbelt.

Who is this For?

The Osprey Exos 58 is a perfect match for thru-hikers and multi-day backpackers who prioritize comfort, ventilation, and weight savings on the trail. It also suits weekend warriors looking for a feature-rich design without the bulk of traditional packs. With its 58-liter capacity and ultralight frame, it strikes an ideal balance for those who need space but want to avoid the burden of a heavy, rigid pack. However, it’s less suited for carrying loads consistently over 35 pounds or for winter and technical mountaineering trips where a reinforced frame and gear-hauling capabilities are essential.

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REI Co‑op Flash 55L

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Osprey Atmos AG 65L