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Thule Stir Alpine 40L hiking backpack obsidian gray
Thule Stir Alpine 40L hiking backpack obsidian gray
Thule Stir Alpine 40L hiking backpack obsidian gray
Thule Stir Alpine 40L hiking backpack obsidian gray
Someone on a snowy mountain carrying skis and rope on their Thule Stir Alpine 40L ski backpack.
Two people climb up a snowy mountain with skis and rope attached to their Thule Stir Alpine 40L ski backpack.
Thule Stir Alpine 40L video
Current image number

Thule Stir Alpine

40L hiking backpack obsidian gray

A streamlined backpack perfect for skiing, mountaineering and climbing.
Thule Stir 40L 3204502 nylon fabric
Designed to support any adventure with a highly weather and abrasion resistant coated nylon fabric
Thule Stir 40L 3204502 removable items
Removable lid, frame sheet, hip belt padding and sternum strap allow pack weight to be reduced up to 500g /1.10 lb for light and fast missions
Thule Stir 40L 3204502 storm flap
Storm flap provides weather protection when lid is removed
Thule Stir 40L 3204502 ski attach
Securely attach skis using an A frame or diagonal carry
Thule Stir 40L 3204502 quick access pocket
Quickly access a snack in the shoulder strap stretch pocket
Thule Stir 40L 3204502 fast access side zipper
Fast-access side zipper allows you to find contents toward the middle and bottom of the pack
Thule Stir 40L 3204502 tool garage
Secure two ice axes with a dedicated tool garage
Thule Stir 40L 3204502 compression strap
Attach a climbing rope or jacket with the underlid compression strap
Hydration compatible design features reservoir sleeve with drink tube exit port (Reservoir sold separately)
Thule Stir 40L 3204502 zipped mesh pocket
Easily store small items in the interior zipped mesh pocket
Thule Stir 40L 3204502 gear loops
Access protection easily with gear loops integrated to hip belt






Day hike


Coated 210D Robic, 70D nylon


40 L

Dimensions (LxWxH)

29 x 26 x 58 cm


1.29 kg

Model number


Thule Stir Lifestyle video

Tested to the limit

At the Thule Test Center™ in Hillerstorp, Sweden, products go through extreme testing. Our roof rack systems are designed to carry your gear and fit your car as safely and securely as possible. Below are just a few examples of the many tests conducted.
Explore Thule test center
A Thule suitcase is being tested in the Thule test center durability test.

Quality that lasts

All Thule bags are rigorously tested to ensure they will stand the test of time. Our luggage even goes through an extensive 50 tests before it’s given the Thule logo.
A bluesign systems partner logo in blue and white.

bluesign® system members

We are partners of the bluesign® system, an international standard for textile production aimed at reducing the impact of manufacturing on people and the planet.
An image from the Thule factory.

Responsible sourcing and logistics

We obey the principles of the UN Global Compact, as well as ILO and OECD guidelines, and conduct strict audits to ensure our suppliers respect human rights, labor laws, health and safety, and the environment.

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