Technical sheet

Unisex

Osprey Sirrus backpack

Name: Osprey Sirrus backpack
Brand: Osprey
SKU: 142625041
Price: 173.99 EUR
Availability: InStock
Rating: 4 (1 reviews)

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1 Reviews

24 Questions

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Size

Long

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Stringing

Unstrung

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36 Kg

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Features of Osprey Sirrus

Product description of Osprey Sirrus backpack

Description summary

Experience cloudlike comfort on overnight adventures with the OSPREY Sirrus 36 backpack. This top-loading pack boasts exceptional ventilation and an adjustable women´s fit for ultimate comfort. Discover spacious storage with a main compartment, fixed lid with pockets, and a hidden side-zip for easy access. Keep gear organized with a collapsible lower compartment, strategic pocketing, and front stash pocket. Additional features include hipbelt pockets, stretch side pockets, and a raincover. Trek with ease thanks to the Stow-on-the-Go trekking pole attachment and ice tool loop. Crafted from recycled, bluesign® APPROVED nylon. (Reservoir not included)

Reservoir not included .

Enjoy cloudlike comfort with this exceptionally ventilated top-loading hiking pack.

Offering an adjustable women´s fit and spacious storage, the Sirrus 36 lends cloudlike comfort to overnight missions.

A hidden side-zip pocket grants additional storage, a collapsible lower compartment keep gear within reach, thoughtful pocketing wrangles small essentials and a raincover deploys when needed.

Features:

Top-loading main compartment with cinch closure and top lid.

Fixed top lid with large compartment and underlid zippered pocket with key clip.

Hidden side-zip secondary access to main compartment.

Large, hidden side-zip pocket for additional storage.

Zippered bottom access to separate, collapsible compartment.

Removable sleeping pad/accessory straps.

Included raincover stores in pocket at base of pack.

Large, vertical-zip front stash pocket is perfect for extra layers.

Two zippered hipbelt pockets keep snacks, phone or other small items handy.

Stretch side pockets carry water bottles or other quick-access items.

Internal sleeve with hose routing port and Hydraclip for easily hanging hydration reservoir.

Upper and lower side compression straps stabilize load.

Adjustable sternum strap with magnetic closure.

Stow-on-the-Go trekking pole attachment.

Ice tool loop with bungee tie-off.

Front panel lash loops for attaching extra gear.

Composition:

bluesign® APPROVED, 100% recycled 100D X 210D nylon w/ honeycomb ripstop, DWR treatment made without PFAS.

Specifications

Manual

Technical specifications of Osprey Sirrus

Capacity

36 L
Back panel ventilation

Yes
Material density

100D X 210D nylon
Rain cover included

Yes
Hydration system compatible

Yes
Hip belt pockets

Yes
Color

Grey
Capacity

41-50 L
Gender

Men
Gender

Women
Age

Adult
Recommended Use

Hiking
Structure

Frameless

Features of Osprey Sirrus

Color Grey

Color

Grey

Capacity 41-50 L

Capacity

41-50 L

Gender Men

Gender

Men

Women

Age Adult

Age

Adult

Recommended Use Hiking

Recommended Use

Hiking

Structure Frameless

Structure

Frameless

Key differentiators

36L capacity with multiple access points, including top-loading, side-zip, and a separate bottom compartment.

Constructed from bluesign® APPROVED, 100% recycled 100D X 210D honeycomb ripstop nylon.

Features an exceptionally ventilated back panel for superior comfort during active use.

Hydration-compatible design with an internal sleeve and hose port (reservoir not included).

Includes an integrated raincover, Stow-on-the-Go trekking pole attachment, and an ice tool loop.

Technology in Osprey Sirrus backpack

Energy rating

Warnings

/ 5

1 Reviews

What our customers are saying about Osprey Sirrus backpack

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Include AI Generated questions and answers

2026-09-09

Generated by AI and verified

Is this backpack made from sustainable materials?

Answer of Generated by AI and verified

Yes, this backpack is constructed with sustainability in mind. The main body is made from 100% recycled 100D X 210D nylon, which is also bluesign® APPROVED. Additionally, it features a DWR treatment made without PFAS.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Does the Osprey Sirrus backpack come with a raincover?

Answer of Generated by AI and verified

Yes, an included raincover is provided with the Osprey Sirrus Backpack. It is stored in a dedicated pocket at the base of the pack for easy access when needed.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

What is the capacity of the Osprey Sirrus backpack?

Answer of Generated by AI and verified

The Osprey Sirrus backpack has a volume of 36 liters, making it suitable for day hikes or light overnight trips.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Is the Osprey Sirrus Backpack worth buying for hiking users?

Answer of Generated by AI and verified

The Osprey Sirrus Backpack is designed for hiking with features like a ventilated back panel and hydration compatibility, making it a great choice for hiking users.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Is this backpack compatible with a hydration reservoir?

Answer of Generated by AI and verified

Yes, the Osprey Sirrus is hydration compatible. It features an internal sleeve with a hose routing port and a Hydraclip for easily hanging a hydration reservoir. Please note that the reservoir itself is not included.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

What kind of pockets and storage options does this pack have?

Answer of Generated by AI and verified

This pack offers multiple storage options for organization. It has a top-loading main compartment, a fixed top lid with a large compartment, a hidden side-zip pocket, a separate collapsible bottom compartment, two zippered hipbelt pockets, and stretch side pockets for water bottles.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

What material is the Osprey Sirrus backpack made of?

Answer of Generated by AI and verified

The Osprey Sirrus is constructed from 100% recycled 100D X 210D nylon with a honeycomb ripstop pattern for durability. It also has a DWR (Durable Water Repellent) treatment.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Does this backpack have a ventilated back panel?

Answer of Generated by AI and verified

Yes, this backpack is designed with an exceptionally ventilated back panel to provide comfort during your hike.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Is this backpack suitable for carrying trekking poles or an ice tool?

Answer of Generated by AI and verified

Yes, it is equipped for carrying gear. It includes a Stow-on-the-Go trekking pole attachment, an ice tool loop with a bungee tie-off, and front panel lash loops for attaching extra gear.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

What is the recommended use for the Osprey Sirrus 36?

Answer of Generated by AI and verified

The Osprey Sirrus 36 is designed primarily for hiking. Its 36-liter capacity and features like hydration compatibility and trekking pole attachments make it well-suited for day-long hikes or light overnight missions.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Is this backpack designed for a specific gender?

Answer of Generated by AI and verified

The product data specifies this as a unisex model, suitable for adults. The description also mentions an adjustable women's fit, indicating it is designed to be versatile and comfortable for a wide range of users.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

How does the Osprey Sirrus Backpack compare to the Osprey Zealot 30l Backpack?

Answer of Generated by AI and verified

The Osprey Sirrus Backpack offers a 36 L capacity, which is larger than the Osprey Zealot 30l Backpack, making it suitable for longer hikes.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Is the Osprey Sirrus backpack made from sustainable materials?

Answer of Generated by AI and verified

Yes, the Osprey Sirrus backpack is crafted from recycled, bluesign® APPROVED nylon, making it an eco-conscious choice for your hiking adventures.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Does this backpack come with a rain cover?

Answer of Generated by AI and verified

Yes, the Osprey Sirrus backpack includes a raincover. It is stored in a dedicated pocket at the base of the pack for easy access when the weather changes.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Is the Osprey Sirrus backpack compatible with a hydration system?

Answer of Generated by AI and verified

Yes, this backpack is hydration compatible. It features an internal sleeve with a hose routing port and a Hydraclip for easily hanging a hydration reservoir. Please note that the reservoir is not included.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Is the Osprey Sirrus Backpack worth the investment?

Answer of Generated by AI and verified

The Osprey Sirrus Backpack offers a combination of eco-friendly materials, excellent organizational features, and a comfortable fit, making it a valuable choice for hikers seeking a reliable and sustainable backpack.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

What is the capacity of the Osprey Sirrus backpack?

Answer of Generated by AI and verified

The Osprey Sirrus backpack has a capacity of 36 liters, providing ample space for overnight hiking trips.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

What kind of ventilation does the Sirrus backpack have?

Answer of Generated by AI and verified

This backpack is designed with exceptional ventilation, featuring a ventilated back panel to enhance comfort during active use.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

How many pockets does the Osprey Sirrus have?

Answer of Generated by AI and verified

The Osprey Sirrus is well-equipped for organization. It features a main compartment, a fixed top lid with a large compartment and an underlid zippered pocket, a hidden side-zip pocket, a zippered bottom compartment, a large front stash pocket, two zippered hipbelt pockets, and stretch side pockets.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

What material is the Osprey Sirrus backpack made of?

Answer of Generated by AI and verified

This backpack is constructed from 100D X 210D recycled, bluesign® APPROVED nylon.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Is this backpack suitable for hiking?

Answer of Generated by AI and verified

Yes, the Osprey Sirrus is specifically designed for hiking. It includes features tailored for the trail, such as a Stow-on-the-Go trekking pole attachment, an ice tool loop, and compatibility with hydration systems.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Can I attach trekking poles or an ice axe to this pack?

Answer of Generated by AI and verified

Yes, you can. The backpack is equipped with a Stow-on-the-Go trekking pole attachment and an ice tool loop with a bungee tie-off for securely carrying your gear.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

What audience is the Osprey Sirrus backpack designed for?

Answer of Generated by AI and verified

The Osprey Sirrus is designed as a unisex backpack for adults. It also features an adjustable fit to enhance comfort for different body types.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

How does the Osprey Sirrus Backpack compare to the Osprey Zealot 30l Backpack?

Answer of Generated by AI and verified

The Osprey Sirrus Backpack features a larger capacity of 36 liters compared to the Osprey Zealot 30l Backpack, making it more suitable for longer hikes where additional storage is needed.

* Generated by AI based on customer and product data

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Frequently bought together

Best sellers

Use cases

Extended Day Hiking 100% Fit

With a generous 36L capacity, this backpack is engineered for elite hikers undertaking long, demanding day trips that require extra layers, food, and gear. The hydration compatibility and ventilated back panel ensure peak performance and comfort throughout the most strenuous hikes.

36 L capacity,Hydration compatible,Ventilated back panel,Included rain cover

Overnight Fastpacking 80% Fit

For the minimalist professional pursuing fast-and-light overnight objectives, the Sirrus offers a streamlined, frameless design. The 36L volume is sufficient for an ultralight shelter, sleeping system, and essentials, while the Snuggle-Up suspension maintains stability during high-tempo movement.

36 L capacity,Frameless structure,Snuggle-Up suspension system,Hip belt pockets

Trekking 90% Fit

This pack is the ultimate choice for the environmentally-conscious adventurer seeking top-tier performance without compromise. Constructed from 100% recycled nylon, it allows you to tackle challenging trails while supporting sustainable manufacturing principles.

100% recycled 100D X 210D nylon material,Intended for hiking,Included rain cover

All-Weather Hiking 90% Fit

Engineered for four-season performance, this backpack ensures your gear remains protected in unpredictable conditions. The integrated rain cover provides immediate defense against downpours, making it a reliable choice for competition-level hikers who don't let weather dictate their plans.

Included rain cover,Durable 100D X 210D nylon fabric,Hip belt pockets for quick access

Best for

Best for Dedicated Hikers

With a 36L capacity, hydration compatibility, and ventilated back panel, this pack is built for long days on the trail.

Capacity: 36 L, Intended use: hiking, Hydration compatible: yes, Back panel ventilation: yes

Ideal for Adventurers

This pack's construction from 100% recycled nylon aligns with a commitment to performance without compromising environmental values.

Material: nylon (Composition: 100% recycled 100D X 210D nylon)

Perfect for All-Weather Trekkers

An included rain cover ensures your equipment stays dry, making this a dependable choice for unpredictable weather.

Rain cover included: yes

Top Choice for Organized Explorers

Featuring convenient hip belt pockets, this pack keeps critical items within reach for ultimate trail efficiency.

Hip belt pockets: yes

Benefits

FunctionalCarry Your Gear for Day Hikes

With a 36 L capacity, this backpack provides ample space for the essentials needed for hiking excursions. It is specifically designed for hiking use, accommodating your gear for a day on the trails.

Intended use: hiking

Ideal buyer profiles

The Day Hiker

This hiker prioritizes sustainability and environmental impact in their gear choices. They look for products made from recycled materials that are built to last, reducing the need for frequent replacements. They enjoy day-long excursions and require a comfortable, functional pack for their adventures.

The Osprey Sirrus is an excellent match, as its composition of 100% recycled nylon directly addresses the priority for sustainable materials. The ventilated back panel and hydration compatibility provide the comfort and convenience needed for long hikes, while the 36L capacity and hip belt pockets offer ample, organized storage.

The All-Weather Adventurer

This individual hikes in a variety of conditions and needs gear that can adapt to changing weather. They value preparedness and look for features that keep their equipment dry and accessible, whether facing a sudden downpour or a sunny day on the trail.

With an included rain cover, this backpack offers immediate protection against wet weather. Its hydration-compatible design ensures easy access to water, while the ventilated back panel helps manage comfort during strenuous activity in any climate, making it a reliable choice for unpredictable conditions.

The Organized Trail Explorer

This person enjoys being well-prepared and keeping their gear neatly organized on the trail. They prefer backpacks with dedicated compartments and easy-to-access pockets for essentials like snacks, maps, and electronics, ensuring a smooth and efficient hiking experience.

The Sirrus backpack's 36L capacity provides generous space for a full day's gear. The inclusion of hip belt pockets allows for quick access to small, essential items without needing to remove the pack, perfectly suiting the needs of a hiker who values organization and convenience.

Competitive features

When choosing a hiking backpack, key features like fit, storage options, and included accessories can make a significant difference. The Osprey Sirrus is a top-loading hiking pack designed with an adjustable women's fit, offering a range of features for organization and comfort on the trail. While detailed specifications for direct comparison are limited, we can analyze the Sirrus based on its described attributes against what hikers typically look for in alternatives.

Where it excels

The Osprey Sirrus provides exceptional organization with multiple storage options, including a top-loading main compartment, a hidden side-zip pocket, a separate collapsible lower compartment for items like a sleeping bag, and two zippered hipbelt pockets for easy access to small essentials. Designed for convenience and adaptability, this pack includes a deployable raincover stored in its own pocket and removable straps for carrying a sleeping pad or other accessories, adding value and preparedness for changing weather conditions. It features an adjustable fit specifically for women and is described as offering 'cloudlike comfort' and exceptional ventilation, making it a strong candidate for overnight missions where comfort over long periods is crucial.

Consider alternatives if...

Verdict

The Osprey Sirrus backpack stands out as a well-equipped and thoughtfully designed option for hiking, particularly for overnight trips. Its strengths lie in its specialized women's fit, excellent ventilation, and a comprehensive set of storage features, including a separate sleeping bag compartment and an integrated raincover. While it's positioned similarly in price to its competitors, its feature set offers considerable value for hikers who prioritize comfort, organization, and built-in conveniences.

Specs comparison

	Osprey Sirrus backpack	Osprey Zealot 30l Backpack	Osprey Arcane Xl Day 30l Backpack	Osprey Firn 28l Backpack	Osprey Ozone Laptop 18l Backpack	Osprey Farpoint Backpack
Material	nylon	nylon	synthetic	-	nylon	nylon
Capacity	36.0 L	30 Litres	30.0 L	28.0 L	18.0 L	31.0 L
Hydration Compatible	true	true	true	true	true	true
Intended Use	hiking	climbing	hiking	hiking	hiking, urban	hiking, travel
Department Name	adult	Luggage & Bags	Adults	Luggage & Bags > Backpacks	Luggage & Bags > Backpacks	-
Suspension System	Snuggle Up	low profile harness	-	vest-fit harness	-	LightWire
Type Of Rucksack Backpack Holdall	frameless	frameless	frameless	hiking backpack	Frameless	Frameless
Volume	36 L	30 L	30 L	28 L	21 L	70 L
Back Panel	Yes	EVA-molded	NeoSpacer Mesh	Yes	AirScape	Airspeed
Material Density	100D X 210D nylon	ballistic nylon	480D Polyester	-	210D	210D Nylon
Back Panel Ventilation	true	-	NeoSpacer Mesh	Yes	AirScape	AirSpeed™ Backpanel
Hydration System Compatible	true	Yes	Yes	Yes	Yes	Yes

Specs vs competitors

	Osprey Sirrus backpack	Granite Gear Crown3 60l Regular Backpack	Millet Seneca Air 30l Backpack	Ortovox Switchback 30l Backpack	Berghaus Mtn Guide M45+ Am Backpack	Ortovox Peak 35l Backpack
Material	nylon	synthetic	synthetic	polyamide	nylon	recycled polyamide
Capacity	36.0 L	51-60 L	21-30 L	30 L	45 L	35 L
Hydration Compatible	true	true	true	true	true	true
Intended Use	hiking	hiking	hiking	hiking	hiking	hiking
Department Name	adult	Luggage & Bags > Backpacks	Luggage & Bags > Backpacks	adult	Luggage & Bags > Backpacks	-
Suspension System	Snuggle Up	V.C. (Vapor Current) Mark 3 Frame	-	FULL CONTACT LIGHT BACK SYSTEM	Snuggle Up	Snuggle Up
Type Of Rucksack Backpack Holdall	frameless	frameless	Frameless	internal frame	-	backpack
Volume	36 L	60 L	30 L	30 L	45 L	35 L
Back Panel	Yes	Yes	ventilated	FULL CONTACT LIGHT BACK SYSTEM	breathable back panel	Swisswool 3D BACK SYSTEM
Material Density	100D X 210D nylon	-	330D	-	-	-
Back Panel Ventilation	true	Yes	Yes	FULL CONTACT LIGHT BACK SYSTEM	Yes	Yes
Hydration System Compatible	true	Yes	Yes	Yes	Yes	Yes