Klattermusen Fjörm Backpack 18L "Raven"

Founded in 1975, Klättermusen is known for producing refined mountaineering equipment that combines durability, performance and environmental responsibility. Built to perform in harsh and unpredictable conditions, every piece is designed with longevity and function at its core.

The Klättermusen Fjörm 18L Backpack is a fully waterproof pack designed for fast trekking and movement in wet conditions. Featuring a taped seam construction, it delivers complete protection from the elements, making it a dependable option for mountain days where weather can change quickly.

Access is simple and efficient thanks to a cinch opening system, paired with a top lid closure for added protection against rain. The design keeps things streamlined while ensuring your gear remains secure and dry.

Comfort is prioritised through 3D mesh shoulder straps and a ventilated back panel, allowing airflow during high-output movement. External storage is handled by two oversized mesh pockets, ideal for carrying water bottles or quick-access gear.

For added versatility, the Fjörm includes a bungee cord system on the shoulder strap for securing trekking poles, alongside a toggle loop for hydration system compatibility, making it well suited to fast-paced mountain travel.

Lightweight, weatherproof and built for efficiency, the Fjörm 18L is designed for those moving quickly through demanding terrain.

• Taped 100% waterproof construction
• Single closure top lid entry
• Cinch opening for easy and fast access
• 3D-mesh shoulder straps and back panel for maximum ventilation
• Two oversized mesh pockets on outside
• Fabric Composition: 100% Polyamide
• Fabric Certification: GRS -Global Recycled Standard, bluesign® Approved Fabric
• Made In: Vietnam
• Colourway: Raven
• Product Code: 10557-961

All sizes displayed on our website are UK sizes.

We are currently working on measurements for apparel and accessories so please bear with us.

In the meantime, for footwear, please refer to the sizing guide here. However, if you require any additional advice on sizing, please contact us.

Worldwide shipping, domestic shipping in the UK, and in-store collection is available.

You can find all relevant shipping information here.

We have a 28-day return policy, which means you have 28 days after receiving your item to request a return. 

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.