Osprey
Osprey Sirrus 24
The Sirrus is the women's-fit Stratos and the ventilated counterpart to the Tempest: a suspended AirSpeed mesh panel rather than contact foam, plus an included rain cover and a heavier 210D honeycomb shell over a 420D base. It is the day pack in Osprey's women's line for hot weather and long days.
Specifications
Sizes Available
| Capacity | Price | Weight |
|---|---|---|
| 24 Lthis pack | $200 | 2.69 lbs |
| 36 L | — | — |
Features
Pros
- ✓The AirSpeed suspended mesh is the best-ventilating back panel available in a women's daypack this size.
- ✓A rain cover is included, which the pricier Tempest does not offer.
- ✓A 420D recycled base is real reinforcement on the panel that takes the most wear.
- ✓The 15-19 in torso range is genuinely women's-specific rather than a shortened unisex fit.
- ✓Hipbelt pockets are included and sized for a phone.
- ✓A 36 L sibling shares the same suspension for overnight use.
- ✓210D honeycomb nylon is more durable than the 100D fabrics on the lighter Osprey daypacks.
- ✓Osprey's All Mighty Guarantee applies.
Cons
- ✗At 43 oz it is the heaviest pack in this comparison group and 8 oz heavier than the Tempest 22 for 2 L more.
- ✗$200 is high for 24 L, and the Gregory Juno 24 undercuts it at $150 and 31 oz.
- ✗The suspended mesh consumes depth, so usable volume is less than 24 L implies.
- ✗No manufacturer maximum load is published.
- ✗The 36 L size has no independently measured weight published.
- ✗The mesh panel is harder to repair in the field than a foam panel.
- ✗The frame makes it bulky to pack inside luggage.
- ✗Current pricing and the full Stratos/Sirrus size run are poorly documented; only the 24 and 36 could be confirmed.
Compare the Osprey Sirrus 24
Related backpacks
More from Osprey →
Osprey
Osprey Talon 22
The Talon 22 is the best-selling hiking daypack of its generation — a do-everything 22-liter with an adjustable torso, wrap-around harness, and enough attachment points for trekking poles, helmets, and ice axes. The women's version is the Tempest 20.
Weight
2.4 lbs
Capacity
22 L
Frame
Frameless
Also in 11 L / 33 L / 44 L
Osprey
Osprey Tempest 22
The Tempest is the women's-fit Talon and Osprey's technical daypack. The 2025 redesign moved the line to an AirScape ridged-foam backpanel that sits against the back rather than a suspended mesh, which keeps the load close and stable for scrambling at the cost of some airflow. It runs 11, 22 and 33 L.
Weight
2.19 lbs
Capacity
22 L
Frame
Internal Frame
Also in 11 L / 33 L

Osprey
Osprey Stratos 24
The Stratos 24 is the Talon's ventilated sibling — a full suspended-mesh AirSpeed back panel, a real perimeter frame, and an included raincover in a 24-liter day hiker. The women's version is the Sirrus 24.
Weight
2.6 lbs
Capacity
24 L
Frame
Internal Frame
Also in 34 L / 44 L