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Osprey

Osprey 3598-Stratos backpack

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Features of Osprey 3598-Stratos

Product description of Osprey 3598-Stratos backpack

Description summary

Experience unmatched comfort on day hikes and overnights with the Osprey Stratos 3598-Stratos backpack. Its top-loading design, featuring cloudlike ventilation, ensures you stay cool. Enjoy spacious storage with a collapsible lower compartment for easy gear access, and thoughtful pocketing for essentials. A built-in raincover deploys when needed. The pack boasts a fixed top lid with a large compartment, underlid pocket, and key clip. Access gear via zippered bottom access. Removable sleeping pad straps, a large front stash pocket, and zippered hipbelt pockets keep everything organized. Stretch side pockets are perfect for water bottles, while the internal sleeve supports hydration reservoirs (not included). Compression straps stabilize your load, and an adjustable sternum strap with magnetic closure adds comfort. Integrated trekking pole and ice tool attachments, plus front panel lash loops, provide versatile carrying options. Crafted from bluesign® APPROVED, 100% recycled nylon with PFAS-free DWR treatment

Reservoir not included .

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

Offering an adjustable men´s fit and spacious storage, the Stratos 36 lends cloudlike comfort to day hikes and short overnights.

A zippered collapsible lower compartment keep gear within reach, thoughtful pocketing wrangles small essentials and an integrated raincover deploys when you need it.

Features:

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

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

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 3598-Stratos

  • 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

    Black

  • Capacity

    31-40 L

  • Gender

    Men

  • Gender

    Women

  • Age

    Adult

  • Recommended Use

    Hiking

  • Structure

    Frameless

Features of Osprey 3598-Stratos

Color Black

Color

Black

Capacity 31-40 L

Capacity

31-40 L

Gender Men

Gender

Men

Women

Women

Age Adult

Age

Adult

Recommended Use Hiking

Recommended Use

Hiking

Structure Frameless

Structure

Frameless

Key differentiators

Constructed from bluesign® APPROVED, 100% recycled 100D X 210D nylon with a PFAS-free DWR treatment for weather resistance.

Designed for comfort with a highly ventilated back panel and an adjustable sternum strap.

Features a 36 L capacity with a top-loading design and a separate, collapsible lower compartment for organized gear access.

Hydration-compatible design includes an internal sleeve with a hose port for on-the-go hydration.

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

Technology in Osprey 3598-Stratos backpack

Energy rating

Warnings

/ 5

1 Reviews

What our customers are saying about Osprey 3598-Stratos backpack

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Include AI Generated questions and answers

2026-07-15

Generated by AI and verified

Osprey 3598-Stratos backpack

What is the capacity of the Osprey Stratos 3598-Stratos backpack?

* Generated by AI based on customer and product data

2026-07-16

Generated by AI and verified

Osprey 3598-Stratos backpack

What is the capacity of the Osprey Stratos backpack?

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Osprey 3598-Stratos backpack

Is this backpack made from sustainable materials?

Answer of Generated by AI and verified

Yes, this backpack is crafted from bluesign® APPROVED, 100% recycled nylon, reflecting a commitment to using environmentally conscious materials.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Osprey 3598-Stratos backpack

Does the Osprey Stratos backpack come with a rain cover?

Answer of Generated by AI and verified

Yes, this backpack includes an integrated raincover that stores in a dedicated pocket at the base of the pack for easy deployment when needed.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Osprey 3598-Stratos backpack

Is the Osprey Stratos backpack worth buying for hiking users?

Answer of Generated by AI and verified

The Osprey Stratos backpack offers excellent features for hiking users, including a ventilated back panel and a rain cover, making it a reliable choice for various weather conditions.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Osprey 3598-Stratos backpack

What material is the Osprey Stratos backpack made of?

Answer of Generated by AI and verified

The Osprey Stratos backpack is constructed from 100D X 210D bluesign® APPROVED, 100% recycled nylon for durability and a reduced environmental footprint.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Osprey 3598-Stratos backpack

Does this backpack have a ventilated back panel?

Answer of Generated by AI and verified

Yes, the Osprey Stratos features a ventilated back panel designed to provide exceptional airflow and comfort during hikes.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Osprey 3598-Stratos backpack

Is the Osprey Stratos backpack water-resistant?

Answer of Generated by AI and verified

This backpack features a PFAS-free DWR (Durable Water Repellent) treatment to provide water resistance. For heavier rain, it also comes with an included raincover for enhanced protection.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Osprey 3598-Stratos backpack

Are there pockets on the hip belt?

Answer of Generated by AI and verified

Yes, the Osprey Stratos is equipped with two zippered hipbelt pockets, which are convenient for keeping small items like snacks or a phone easily accessible.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Osprey 3598-Stratos backpack

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

Answer of Generated by AI and verified

Yes, this backpack is equipped with integrated attachments for trekking poles and an ice tool, providing versatile carrying options for your gear.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Osprey 3598-Stratos backpack

Can I use a hydration system with this backpack?

Answer of Generated by AI and verified

Yes, the Osprey Stratos is hydration compatible. It features an internal sleeve with hose routing designed to support a hydration reservoir, though the reservoir itself is not included.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Osprey 3598-Stratos backpack

How can I organize my gear in this pack?

Answer of Generated by AI and verified

The pack offers multiple organization options, including a top-loading main compartment, a fixed top lid with a large pocket, a separate collapsible lower compartment with zippered access, a large front stash pocket, stretch side pockets, and zippered hipbelt pockets.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Osprey 3598-Stratos backpack

Who is the Osprey Stratos backpack designed for?

Answer of Generated by AI and verified

This is a unisex backpack designed for adults. Its adjustable fit makes it suitable for a wide range of users for activities like hiking.

* Generated by AI based on customer and product data

Ask a technical question about this product

Frequently bought together
Best sellers

Use cases

Multi-Day Hiking Trips 100% Fit

With a 36 L capacity, this pack is engineered for overnight or weekend hiking excursions. Its compatibility with a hydration system and ventilated back panel provide the necessary support for serious, multi-day treks.

36 L capacity,Hydration system compatible,Ventilated back panel,Hip belt pockets

Technical Day Hiking 90% Fit

This backpack is an advanced choice for challenging day hikes that demand performance and organization. Features like hydration compatibility and hip belt pockets allow for efficient access to water and essentials on the move.

Hydration compatible,Hip belt pockets,100D X 210D Nylon material,Ventilated back panel

Hiking in Variable Weather 80% Fit

This pack is well-suited for hiking in unpredictable weather conditions, featuring a PFAS-free DWR treatment for water resistance and an included rain cover for heavier downpours. Your gear remains protected, allowing you to focus on the trail.

PFAS-free DWR treatment,Included rain cover,Durable 100D X 210D Nylon material

Warm-Weather Trekking 80% Fit

Designed for comfort during strenuous activity, this pack features a ventilated back panel to enhance airflow and reduce sweat. Its hydration system compatibility ensures you can stay hydrated easily on long, hot days on the trail.

Ventilated back panel,Hydration system compatible

Best for

Ideal for Hikers

This pack is built for serious use with its durable 100D X 210D Nylon construction, hydration system compatibility, and ventilated back panel for comfort during strenuous activity.

Material density: 100D X 210D Nylon, Hydration system compatible: Yes, Back panel ventilation: Yes

Best for All-Weather Adventurers

Featuring a PFAS-free DWR treatment and an included rain cover, this backpack ensures your gear stays protected from the elements.

Water resistance: PFAS-free DWR treatment (DWR treatment made without PFAS), Rain cover included: Yes

Perfect for Organized Day-Hikers

With a 36L capacity and convenient hip belt pockets, this pack offers ample, well-organized space for a full day's worth of gear.

Capacity: 36 L, Hip belt pockets: Yes

Benefits

FunctionalKeeps Your Gear Protected in Changing Weather

This backpack is equipped to handle unpredictable weather conditions. It features a water-resistant treatment and includes a rain cover, ensuring your essential gear remains dry during your hiking adventures.

Rain cover included: Yes

FunctionalStay Cool and Comfortable on the Trail

Engineered for comfort during active pursuits, this backpack features a ventilated back panel. This design helps manage moisture and heat, allowing you to focus on the journey and explore further.

Back panel ventilation: Yes

Intended use: hiking

Structure: Frameless

Ideal buyer profiles

The Day Hiker

This individual regularly embarks on day-long hiking trips and requires a reliable pack that can carry all essentials without being cumbersome. They value comfort, organization, and weather protection for varied trail conditions.

With a 36L capacity, this pack offers ample space for a day's worth of gear. Features like the ventilated back panel and hydration compatibility provide comfort and convenience on the trail, while the included rain cover and PFAS-free DWR treatment offer protection from unexpected weather.

The Adventurer

This buyer seeks high-quality gear from reputable brands, prioritizing durability and advanced features over price. They are willing to invest in a product that delivers superior performance and is built to last through many adventures.

As an Osprey product, this backpack meets the expectation of a premium brand. The 100D X 210D nylon construction signifies durability, and thoughtful features like hip belt pockets, hydration compatibility, and an included rain cover demonstrate a commitment to a high-performance user experience.

The Organized Overnighter

This person enjoys short, overnight trips or minimalist weekend excursions and needs a pack that balances capacity with organization. They appreciate dedicated compartments and easy access to essentials like water and snacks.

The 36L volume is well-suited for light overnight trips. The inclusion of hip belt pockets keeps small items within reach, and its compatibility with a hydration system ensures they can stay hydrated on the move. The ventilated back panel helps manage comfort over longer distances.

Competitive features

When evaluating the Osprey 3598-stratos Backpack against other options like the Osprey Transporter, Yeti Crossroads, and Granite Gear Virga3, the focus shifts to specific intended uses. While detailed specifications for a direct feature-by-feature comparison are not available, we can analyze the product's design philosophy based on its description. The Stratos is clearly positioned as a feature-rich pack for dedicated hiking.

Where it excels

The Osprey 3598-stratos excels in organization and convenience for day hikes and overnights, offering features like a collapsible lower compartment, zippered hipbelt pockets, and an internal hydration sleeve. It provides exceptional carrying versatility with integrated attachments for trekking poles and ice tools, plus removable sleeping pad straps and front panel lash loops for extra gear. Comfort is a key strength, highlighted by its ventilated back panel design to keep you cool and an adjustable sternum strap for a stable, customized fit on the trail. Preparedness for changing weather is built-in, thanks to an included raincover that can be deployed when conditions turn wet.

Consider alternatives if...

For buyers seeking a minimalist or ultralight pack, the comprehensive feature set of the Stratos, including a fixed top lid and multiple compartments, might be more than necessary. Alternatives may offer a simpler, lighter design. Travelers prioritizing carry-on compliance or urban commuting might find packs specifically designed for those purposes, like the Osprey Transporter, to be a more streamlined fit.

Verdict

The Osprey 3598-stratos is a well-equipped and highly organized backpack designed for the dedicated hiker. Its thoughtful features, such as the integrated raincover, multiple access points, and specialized gear attachments, make it a strong choice for day hikes and light overnight trips. While other packs may focus on travel simplicity or ultralight minimalism, the Stratos commits to providing comfort and comprehensive functionality on the trail.

Specs comparison

Favorite On Favorite Off
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Water ResistancePFAS-free DWR treatmentDWR treatments made without PFASyes-DWR treatment made without PFAS-
Capacity36 L68 L34.0 L36 L35 L65 L
Hydration Compatibletruetrue-truetruetrue
Intended Usehikinghikinghikinghikinghikinghiking
Department NameLuggage & Bags > BackpacksBackpacksadult--Luggage & Bags > Backpacks
Volume36 L68 L34 L36 L35 L65 L
Back PanelYesMesh-covered ridged foamadjustable AirSpeed™ backpanelYesventilated backpanel-
Material Density100D X 210D Nylon420D nylon, 500D nylon500D100D X 210D nylon300D Polyester, 600D Polyester420D Nylon
Back Panel VentilationYesMesh-covered ridged foamAirSpeed Suspended MeshYesventilated backpanelYes
Hydration System CompatibleYesYesNoYeshydration/laptop sleeveYes

Specs vs competitors

Favorite On Favorite Off
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Water ResistancePFAS-free DWR treatment-truewater-resistant zipper--
Capacity36 L60.0 L35 L40 L30 L30.0 L
Hydration Compatibletruetruetruetruetruetrue
Intended Usehikinghikinghikinghikinghikinghiking
Department NameLuggage & Bags > BackpacksLuggage & Bags-Luggage & Bags > BackpacksAdultsLuggage & Bags > Backpacks
Volume36 L5235 L40 L30 L30 L
Back PanelYesTergolight back systemSwisswool 3D BACK SYSTEMSwisswool TEC KNIT back systemCOMFORT-CONTACT back system-
Material Density100D X 210D Nylon---210D100D 40% Recycled Nylon Ripstop with C0 DWR: Designed without PFAS
Back Panel VentilationYesTergolight back systemYesSwisswool TEC KNIT back systemYesAlly Cross-Stay + HDPE Framesheet
Hydration System CompatibleYesYesYesYesYes-
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