Osprey Sirrus 24 (2026) Daypack Review
The women’s Osprey Sirrus 24 ($200) brings backpacking pack comfort and support to a daypack-sized package. Tested in England’s Lake District and while scrambling up rocky ridgelines, its sturdy metal suspension, padded hipbelt and shoulder straps, and highly adjustable fit truly impressed. We also love the integrated rain cover and abundance of pockets. The tradeoff is weight: at nearly 3 pounds, the Sirrus is significantly heavier and less packable than more minimalist alternatives. But for hikers who prioritize comfort, support, and all-day usability over shaving ounces, it’s hard to knock.
Comfort & Support
Organization
Weight
Durability
Water Resistance
Sustainability
Weight
2 lb. 13.8 oz.
Hipbelt
Padded
Suspension
Perimeter frame
Fabric
100D X 210D & 420D nylon
Capacities
24, 34, 36, 44L
Pros
Cons
Osprey Sirrus 24
For this season's top models, see our guide to the Best Hiking Daypacks.
The women’s Osprey Sirrus 24 feels like it was designed around three priorities: comfort, support, and easy-to-access storage. I took it on a weeklong hiking trip in England’s Lake District, and one thing became immediately apparent: a huge percentage of hikers out there were carrying Osprey packs. After spending long days with the Sirrus, I understand why. Osprey has a knack for making packs that disappear on your back, and the Sirrus is one of the best examples I’ve used. It feels less like a typical daypack and more like a backpacking pack scaled down for day hiking, retaining much of its support and structure while shedding some (but certainly not all) of its bulk.
The biggest contributor to that comfort is the Osprey Manta 34's AirSpeed suspension system. A sturdy wire frame gives the pack shape and stability, while the suspended mesh backpanel creates about 1 to 2 inches of space between your back and the pack body. The result is excellent ventilation without sacrificing support. During a heat wave that rolled through part of our trip, my back remained surprisingly cool and dry, even on exposed climbs.
The rest of the harness is equally well executed. The hipbelt is generously padded and covered in soft mesh, and I especially liked how the hipbelt and backpanel are integrated into one seamless piece. The shoulder straps follow the same formula: plush, breathable, and comfortable enough that I never noticed them, whether I was wearing a rain shell or just a tank top on warmer days. Most importantly, I never experienced pressure points, rubbing, or any other discomfort.
What impressed me most, though, was how supportive the Sirrus felt on the move. One morning, I found myself sprinting nearly a mile to catch a bus I was running late for. While the contents of the pack bounced around, the pack itself stayed securely anchored to my body. Later in the trip, I tackled a ridgeline scramble that required using both hands and feet, and the Sirrus moved naturally with me even when hiking gave way to more awkward scrambling motions. Osprey rates the pack for loads between 10 and 30 pounds, and while my kit generally ranged from 10 to 15 pounds, the structure felt capable of handling considerably more. The 24-liter capacity naturally limits how much weight most people will carry, but between the hydration compatibility and large side pockets, it can easily accommodate plenty of water—the heaviest item in most day-hiking kits.
Overall, this is one of the most comfortable hiking daypacks I’ve used. It reminds me of my Osprey Tempest 22 in terms of carrying comfort, but the suspended backpanel gives the Sirrus an edge in both breathability and all-day comfort.
In terms of organization, the Sirrus 24 is clearly designed for hikers who like having a dedicated place for everything. The hipbelt pockets are average-sized—large enough to fit my iPhone 16 with a little maneuvering—and were great for snacks and sunscreen. Up top, there are two additional zippered pockets: a small mesh-lined pocket with a key clip near the backpanel and another quick-access pocket on the top/front of the pack. I used these for everything from a sunglasses case and film camera to snacks and a hat. The front of the pack also features a large vertical-zip storage pocket that was great for rain gear, an extra layer, or lunch. I did occasionally wish Osprey had used a stretchy shove-it pocket instead—a feature found on the brand’s Tempest 22—which is a little easier for stashing and retrieving layers on the move.
The pack doesn’t come with a hydration reservoir—the similarly designed Osprey Mira 24 is the one to get should you want an included bladder—but the main compartment has a dedicated sleeve with a hanging clip and hose-routing port. The sleeve is large enough for a 3-liter reservoir, and I used both an Osprey-compatible bladder and a Salomon running reservoir, and both worked well. The only quirk I noticed is that the small zippered pocket at the top sits directly over the hydration sleeve. If you pack that pocket full, you may need to partially unpack it to remove or refill the bladder.
More broadly, the Sirrus leans heavily toward a maximalist approach to organization. That feels a little at odds with its relatively modest 24-liter capacity (note: the Sirrus line also includes roomier 34, 36, and 44-liter versions). But for day hikers who appreciate lots of pockets, it’s a very functional design.
At 2 pounds 13.8 ounces, the Sirrus 24 isn’t light, but it lands right where I’d expect for a comfort-focused hiking daypack with a full frame and suspended backpanel. Compared to the Osprey Tempest 22 (2 lb. 4.3 oz.), the weight difference is fairly modest, and in return you get additional storage space and a noticeably more supportive suspension system. The bigger drawback of the Sirrus’s frame isn’t actually the weight—it’s that the pack doesn’t compress particularly well, making it less convenient to pack inside luggage or a larger travel bag than softer, frameless designs.
The contrast became especially apparent when I switched between the Sirrus and a Hyperlite Summit 30 during my trip to England. At just 12 ounces, the Summit feels almost weightless by comparison. But the comfort gap is equally dramatic. The Sirrus carries weight far better, offers much more structure, and is simply a more enjoyable pack to wear for long days on the trail. For hikers who prioritize comfort over shaving every ounce, I think that’s a worthwhile tradeoff. And despite its rigid structure, I had no trouble fitting the Sirrus inside a 50-liter North Face Base Camp Duffel for travel.
The Osprey Sirrus 24 has the kind of build quality I’ve come to expect from Osprey. The pack body uses a blend of 100-denier and 210-denier nylon, while the base steps up to a thicker 420-denier fabric to better handle abrasion when setting the pack down on rough ground. Those numbers are fairly typical for the category, but the overall execution stands out. The fabrics have a sturdy, confidence-inspiring feel, and everything from the zippers and buckles to the adjustment hardware feels solid and well-made.
After roughly 50 miles of hiking in England’s Lake District, including damp and windy days, exposed ridgelines, and stretches of intense sun during a heat wave, the pack still looks practically new. Nothing has loosened, worn prematurely, or given me any reason for concern. At $200, the Sirrus isn’t cheap, but I think the value proposition is strong for hikers who want many of the features typically found on a backpacking pack in a smaller daypack package. The suspended backpanel, wire frame, supportive hipbelt, integrated rain cover, load-stabilizing straps, and extensive organization all contribute to a premium feel.
In line with its feature-rich design, the Sirrus 24 is well-prepared for wet-weather hiking. The main fabric uses a PFAS-free durable water-repellent finish that sheds light moisture (like a brief rain shower), while a built-in, brightly colored rain cover stored in a dedicated pocket at the base of the pack provides full coverage when the weather turns more serious. While it lacks the integrated waterproofing of a Dyneema pack like my Hyperlite, the easy access to the rain cover does a nice job of covering the bases.
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Longevity
Choosing durable outdoor gear and keeping it in use for longer is one of the best ways to reduce environmental impact. Our proprietary longevity rating assesses factors like overall build quality, materials, fabric denier, component durability, and real-world performance. A green check indicates that we expect the product to be long-lasting relative to its peers, a yellow check mark indicates average longevity, and a red X indicates a product that may have a limited lifespan.
PFAS-Free DWR
Durable water-repellent (DWR) finishes can contain PFAS (per- and polyfluoroalkyl substances). These highly persistent “forever chemicals” are used in outdoor gear for their strong resistance to water, oil, and heat, but are linked to environmental contamination and a range of health concerns. A green check mark indicates the product uses a PFAS-free DWR, while a red X means the DWR contains PFAS.
Recycled Materials
Recycled materials are prevalent in outdoor gear, with nylon, polyester, wool, and down among the most common, but the composition varies widely. A green check mark indicates the product is made with a substantial amount of recycled materials (100% recycled or the core fabric that makes up most of the product is recycled), a yellow check means it contains a moderate to small amount of recycled materials, while a red X means there are no recycled materials in the product.
Bluesign Approved
Bluesign Technologies, based in Switzerland, operates a third-party textile management system that ensures materials are manufactured to strict environmental, chemical, and worker safety standards. A green check mark indicates a product is either a Bluesign Product (contains at least 90% Bluesign-approved fabrics and 20-30% Bluesign-approved accessories) or features a significant amount of Bluesign-approved materials. A yellow check mark means it uses some Bluesign-approved materials but less than the aforementioned category, and a red X means there are no Bluesign-approved materials in the product.
Responsible Manufacturing
This criterion evaluates a brand’s commitment to fair wages, safe working conditions, and reducing environmental impact through certifications and programs like Fair Trade Certified, Fair Wear Foundation, Worldwide Responsible Accredited Production (WRAP), and the Fair Labor Association, while also recognizing brands that manufacture primarily in the U.S. or Europe under strict labor and environmental regulations. A green check mark indicates a brand meets our responsible manufacturing criteria, while a red X means it does not.
Recycled and/or Reduced Packaging
Packaging can add significant waste to outdoor gear purchases, so many brands work to reduce its impact by using recycled materials, incorporating Forest Stewardship Council-certified paper products, and minimizing plastic and paper use. A green check mark indicates a brand uses recycled or reduced materials across all of its packaging, a yellow check indicates moderate or limited use of recycled or reduced packaging, and a red X indicates the brand does not make either of these efforts.
Repair Services
Repair services extend the lifespan of outdoor gear and reduce overall consumption, though programs vary widely. Some brands offer comprehensive repairs for a range of issues, while others provide limited or no repair support. A green check mark indicates a robust repair program, a yellow check mark indicates limited repair services, and a red X indicates the brand does not offer repair services.
Resale and/or Recycling Services
Resale and recycling programs help keep outdoor gear in circulation longer and out of landfills, ranging from trade-in resale platforms that offer store credit to take-back initiatives that recycle products at the end of their usable life. A green check mark indicates a brand offers both resale and recycling programs, a yellow check mark indicates it offers one or the two, and a red X indicates it offers neither.
Carbon Footprint Tracking
This criterion evaluates whether a brand measures, reports, and works to reduce its greenhouse gas emissions using established frameworks such as the Higg Index, Greenhouse Gas Protocol, or The Change Climate Project. A green check mark indicates a brand publicly reports greenhouse gas emissions data, sets clearly defined reduction targets, and uses established tracking frameworks such as Higg or The Change Climate Project. A yellow check mark indicates the brand tracks emissions and outlines reduction goals but provides limited data, lacks science-based verification, or does not clearly report progress. A red X indicates the brand does not appear to track greenhouse gas emissions or provides so little information that its efforts cannot be verified.
Annual Impact Report
Annual impact reports provide transparency and accountability by outlining a brand’s sustainability efforts across areas such as material sourcing, greenhouse gas emissions, waste, water use, supply chains, and packaging. A green check mark indicates a brand publishes a detailed, brand-specific impact report that closely aligns with our sustainability criteria and leaves little room for ambiguity. A yellow check indicates a brand provides some relevant sustainability reporting but lacks detail in key areas or is covered only briefly within a parent company report. A red X indicates a brand does not regularly publish an impact report.
At 5’3” with a 17.5-inch torso, I found the Osprey Sirrus 24 easy to dial in. Although it’s a one-size pack, the torso length is highly adjustable with five height settings, and the tab-style adjustment process is quick, intuitive, and only takes a few moments. Between the adjustable torso, shoulder straps, and hipbelt, I had no trouble achieving a comfortable fit. One minor consideration for shorter users is that the top of the wire frame may sit close to the back of your head. I noticed this occasionally while looking up on a few scrambly sections of trail, but during normal hiking, it wasn’t an issue.
Osprey Tempest 22 ($175): A Lighter, More Nimble Alternative
While the Sirrus 24 feels like a backpacking pack shrunk down for day hikes, the Tempest 22 takes a more traditional daypack approach. It’s lighter, less structured, and moves a bit more naturally on the trail, although you give up the AirSpeed suspension and the excellent ventilation that comes with it. The Tempest is also slightly smaller, but we prefer its front mesh shove-it pocket for quickly stashing layers without stopping. Ultimately, the choice comes down to how much support you want. The Sirrus is the better option for carrying heavier loads in comfort, while the Tempest is a more streamlined choice for everyday hiking. For more, check out our review of the men's Talon 22.
Gregory Jade 24 LT ($170): Another Great Ventilator
The Gregory Jade 24 LT shares a lot with the Sirrus 24, including a trampoline-style backpanel, metal frame, and a comfort-first approach to carrying heavier day-hiking loads. It’s also a bit cheaper, undercutting the Sirrus by $30. The tradeoffs are relatively minor but worth noting: the Jade doesn’t include a rain cover, and its organizational layout is a little simpler. We see the missing rain cover as a notable drawback, while the streamlined pocket arrangement may actually appeal to hikers who find the Sirrus a bit overbuilt. Both packs feel exceptionally well made and built for years of use. They also share a vertically oriented front storage pocket, which isn’t our favorite design since items can spill out if you’re not careful. Overall, the Sirrus gets the nod for its more complete feature set, while the Jade offers a slightly simpler and more affordable take on the same concept. For more, check out our review of the men's Zulu 24 LT.
A backpacking pack wrapped in a 24-liter package, the Osprey Sirrus is a sturdy and highly comfortable daypack. With exceptional ventilation and a full suite of pockets, it's built for big days out—provided you're willing to haul its extra weight.
Comfort & Support
Organization
Weight
Durability
Water Resistance
Sustainability
The Tempest 22 is a do-all pack, up for everything from summit scrambles to biking around town. It offers both reliable comfort and versatile organization. While there are lighter, more supportive, and more specialized models, this is a great all-rounder for general outdoor use.
Comfort & Support
Organization
Weight
Durability
Water Resistance
Sustainability
The Jade 24 LT is basically a backpacking pack in miniature, and we mean that as a compliment. This is a comfortable, sturdy daypack with excellent design elements, especially its breathable trampoline-style backpanel. We wish it came in more sizes, though, and was a bit lighter.
Comfort & Support
Organization
Weight
Durability
Water Resistance
Sustainability
Is the Sirrus 24 for You?
The women’s Osprey Sirrus 24 is an excellent choice if your idea of a great daypack is one that prioritizes comfort and capability above all else. This is not a simple design, nor is it light or packable. But if you like lots of storage options, complete isolation from the gear you’re hauling, and plenty of padding and a cushy ride, the Sirrus is about as complete a package as you can find. And it doesn’t hurt that the sturdy construction just about guarantees it’ll have a long life.
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