Ull Backpack 20L

Back panel with ergonomic harness and red hip belt buckle

Close back view of the rolltop pack with rain hood up

Ice axe secured on the side compression webbing while hiking

Woman wearing the Ull 20L Jade Green on a trail, back view

Close-up of the shoulder straps with adjustable chest strap cord

Close-up of the hip belt with red metal buckle

Klättermusen Ull Backpack 20L in Raven, front view with rope carry

Padded back panel with ergonomic shoulder harness and hip belt

209.90€ 280.00€

- Pay in 3x or 4x with Alma

-25% you save 70.10€

🎿 Ski Touring & Hiking Pack (20L)
⚡ Ultra-Lightweight (718 g)
🧗 Poles, Skis & Ice Axe Ready
🌬️ Ventilated Ergonomic Carry
♻️ Retina® Recycled Nylon Fabric

Range comparison

	Current 20L	Recommended 30L
Best for	Full days	Multi-day treks
Weight	768 g	850 g
Carry	Ski	Ski
Avalanche pocket
Price	209.90€	240.00€
Availability	In stock	In stock
		View

Color: Jade Green

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with Chronopost or on with Colissimo.

Free delivery to pick-up points from €60.

Pairs well with

Shipping

Branded backpacks comes from our French warehouse and are shipped with secured express shipping only.

Our orders are shipped within 2 days.

Here are some estimates depending on your country, calculated from recent shipments.

🇫🇷 France: 2 business days
🇪🇺 EU: 3 to 6 business days
🇬🇧 UK: 4 to 5 business days
🇺🇸 🇨🇦 North America: 6-9 business days

Returns

If you do not like your product, you have 30 days after receipt to return it, no questions ask.

📧 Step 1: Contact us at info@eikenshop.com to inform us of your desire to return the product. We'll provide you with all the details needed.

📦 Step 2: Ship the order and waits for us to receive it.

💳 Step 3: Once received and inspected, we will refund your order to the payment method used during your order, you do not have to do anything.

Ull Backpack 20L Jade Green209.90€

DIMENSIONS

58 cm x 28 cm x 16 cm
22,8" x 11" x 6,3" (H x W x D)
VOLUME

20 L
5,3 gal
WEIGHT

718 g
1,6 lbs

Ull Backpack 20L – Compact Ski Touring & Alpine Hiking Pack

Meet the Klättermusen Ull Backpack 20L — a compact, lightweight ski touring backpack built for half-day missions, fast summit pushes and active mountain days where efficiency matters more than excess volume. With its streamlined 20L format, ergonomic carry and technical attachment system, it gives you the freedom to move fast in snow, rock and mixed terrain without the bulk of a larger alpine pack.

Primarily designed for ski touring, the Ull Backpack 20L also works beautifully as a technical hiking backpack for fast day hikes, alpine trekking and light climbing approaches. Ventilated, stable and close-fitting, it combines dynamic mobility, quick-access storage and mountain-ready features in a clean, minimalist silhouette built for movement all year round.

Who is it for?

For ski tourers, fast hikers, climbers and minimalist mountain users looking for a compact alpine daypack that stays close to the body and never feels overbuilt. If you want a 20L mountain backpack that can carry avalanche tools, hydration, layers and essential alpine gear without slowing you down, the Ull Backpack 20L is a seriously capable option.

Klattermusen Ull Backpack 20L worn during a ski touring ascent in alpine terrain

Klattermusen Ull Backpack 20L open with drawcord top access and organised mountain gear inside

What Makes It Stand Out

Built for fast ski touring and alpine movement: The Ull Backpack 20L is engineered for half- or full-day tours, with a lightweight, movement-friendly design that also performs brilliantly on alpine hikes and technical trekking routes.
Ultra-light and comfortable all day: At just 718 g, it keeps the load light on your back while still offering the stability and mountain-ready features needed for demanding terrain.
Ventilated, ergonomic carry system: The well-ventilated back construction and S-shaped shoulder straps promote airflow, comfort and natural freedom of movement when the pace picks up.
Technical attachment points where they matter: External loop webbing and dedicated holders make it easy to carry trekking poles, skis or an ice axe without cluttering the pack.
Compact, compressible 20L format: Compression straps help stabilize smaller loads and keep the pack efficient, close-fitting and agile across changing conditions.

The top-loaded drawcord design is quick to handle with one hand, even with gloves or on steep terrain. Inside, an organization pocket separates your essentials, while the safety pocket keeps avalanche tools easier to manage. It’s a compact technical daypack that feels clean, smart and purpose-built from the first climb to the final descent.

Why You’re Going to Love It

Some mountain packs are simply more than you need. The Klättermusen Ull Backpack 20L goes the other way: light, efficient, highly wearable and stripped back in the best possible sense. It gives you real alpine functionality without extra structure, unnecessary bulk or wasted space.

Moves naturally with your body thanks to the S-shaped shoulder straps and dynamic sternum system that improve comfort on the climb.
Keeps the load secure and balanced with 4-point sternum attachment, top tension locks and a hip belt safety closure for better weight distribution.
Lets you grab essentials quickly through the side zip access, so you don’t need to fully unpack on the mountain.
Can be made even lighter with its removable back plate — a smart detail for fast missions and minimalist setups.
Works across seasons and activities, from ski touring to hiking, climbing and minimalist trekking.

Need something roomier for longer tours or bigger loads? Explore the Ull Backpack 30L, the larger version designed for more gear-intensive alpine days.

If you’re after a light ski touring backpack that can also serve as a compact hiking pack throughout the rest of the year, the Ull Backpack 20L is one of those rare designs that feels both technical and easy to live with.

Klattermusen Ull Backpack 20L used on a fast alpine mission with poles attached

Technical Specs – Ull Backpack 20L

Brand: Klättermusen
Product type: Lightweight ski touring backpack / compact alpine hiking pack
Product name: Ull Backpack 20L
Fit: Regular fit – body back length 47–52 cm
Dimensions: 58 x 16 x 28 cm
Volume: 20L
Weight: 718 g
Recommended max. load: 8 kg
Opening system: Top-loaded drawcord opening with cinch closure
Access: Side zip access for easier reach on the move
Back system: Ventilated ergonomic back panel
Shoulder straps: S-shaped shoulder straps for improved mobility
Sternum system: 4-S System® sternum closure with 4-point attachment for free movement and stability
Compression: Adjustable compression straps
Hip belt: Hip belt with safety closure for optimal weight distribution
Attachments: Equipment holder for poles and ice axe, cord loop webbing, ski-compatible external carry options
Interior organisation: Internal organisation pocket and internal safety pocket for avalanche tools
Hydration compatible: Yes
Removable back plate: Yes
Main fabric: Retina® – 100% recycled polyamide, 210D, 160 g/m²
Reinforcements: WindStretch® and Duracoat™ in high-wear areas
Water resistance: Water-resistant construction with protective coated fabrics and reinforced high-wear zones
Sustainability: 100% recycled polyamide main fabric, PFAS-free
Best for: Ski touring, hiking, climbing, alpine trekking

FAQ

Is the Ull Backpack 20L good for ski touring?

Yes. The Ull Backpack 20L was specifically engineered for half- or full-day ski tours. It includes attachment options for skis, poles and an ice axe, plus an internal safety pocket for avalanche gear, making it a strong fit for technical winter missions.

Is 20L enough for a full-day mountain mission?

For many fast and efficient mountain days, yes. A 20L format is often enough for layers, hydration, food, gloves, avalanche essentials and a few technical accessories. If you usually carry bulkier equipment or want more room for longer tours, the Ull Backpack 30L may be the better option.

Can the Ull Backpack 20L also be used for hiking and trekking?

Absolutely. While it is primarily designed as a lightweight ski touring backpack, its low weight, ergonomic carry system, hydration compatibility and compressible shape also make it a great technical hiking backpack for fast day hikes, alpine trekking and climbing approaches. Outside Klättermusen, the Millet UBIC 20L covers similar ground for three-season hiking days.

How light is the Klättermusen Ull Backpack 20L?

The pack weighs just 718 g, which makes it an excellent choice for users looking for a lightweight alpine pack that stays comfortable during long ascents and active mountain days.

Is the Ull Backpack 20L waterproof?

The Ull Backpack 20L is highly water-resistant rather than fully waterproof. Its coated technical fabrics and reinforced high-wear areas help protect your gear against snow, moisture and changing mountain conditions.

What is the 4-S System® on the Ull Backpack 20L?

The 4-S System® is Klättermusen’s dynamic sternum closure system. It uses a 4-point attachment design to distribute tension more naturally across the upper body, improving stability while allowing freer shoulder movement during skiing, climbing or hiking.

What is the difference between the Ull Backpack 20L and the Ull Backpack 30L?

The Ull Backpack 20L is the more compact, faster-moving option for lighter mountain missions. The Ull Backpack 30L adds volume for longer tours, extra layers and more gear-intensive alpine days.

What material is the Ull Backpack 20L made from?

The main body is built from Retina®, Klättermusen’s lightweight and durable fabric made from 100% recycled polyamide. High-wear areas are reinforced with WindStretch® and Duracoat™ for added abrasion resistance in demanding alpine use.

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