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Trud [44L]


Trude Backpack 44L

Snow Alpine Climbing Backpack

A lightweight winter climbing backpack with an emphasis on durability. A perfect alpine backpack for ski touring and backcountry use, built for long route adventures. The original 210 denier ripstop fabric is water resistant to 10,000 mm.

The one-roll top backpack can be compressed depending on the activity. It features ski and ice ax attachments, hydration systems, quick release buckles, and more. Side zipper allows easy access to the main compartment. Featuring the latest chest strap feature, the 4-S System, for improved adjustability and control. Lightweight cords and hooks transform a traditional static sternum strap into a dynamic tool.

In 2009, Klettalmusen became the first outdoor company to use recycled polyamide in all its backpacks. Klettalmusen backpacks are made from fishing nets (used aquaculture and ghost fishing nets), fluff (used nylon carpet tops), plastic industrial waste, and scraps of thread and fabric. It is a 100% recycled product.

Click here to learn more about Klettalmusen fabrics and technology.

Key Features

- S-shaped shoulder straps for free movement when climbing
- Shoulder straps with mesh foam padding for increased ventilation
- 4-S chest strap system for freedom of movement and stability
- Padded waist strap for comfortable carrying
- Top compression strap with rope attachment
- Padded back with ventilation channels
- Removable internal backplate
- Inner safety pocket for storing avalanche tools
- Side zipper for easy access to main compartment
- Side loops and compression straps for ski attachment
- Dual equipment holder that can be attached to poles or ice axes
- Hipbelt pocket for convenient storage of small items
- Kevlar aramid reinforcement material bottom
- Loop webbing for attaching extra accessories
- Hydration system compatible
- Triangle reflector for increased visibility


- Weight: 980 g
- Water Column: > 10,000 mm
- Water Column: > 7,000 mm
- Dimension: H69 x W29 x D27
- Recommended Weight: 20 kg


Main Fabric:
Retina®, Econyl® 210D
50% Post-Consumer Recycled Polyamide, 50% Pre-Consumer Recycled Polyamide, 210D, 197g/m², SkylCoat, TPU Coating, bluesign® Approved Fabric, GRS - Global Recycled Standard, Fluorocarbon free
The idea for Retina® 210 Denier Ripstop was to create a lightweight, durable fabric that could be used in high-performance packs. The demands placed on this fabric are high, as it is used in the Alpine and Lightweight Trekking series. In order to meet these demands, we applied Skyl Coating (surface coating) to the front of the fabric, making the surface water repellent. By applying a coating, the water repellent function stays on the fabric for a long time. In addition, the back is coated with TPU to reduce weight while increasing wear resistance. This ensures a waterproof rating of 10,000mm, making it the perfect material for waterproof packs. The material is 210 denier Econyl® fabric. ECONYL® is a recycled yarn made from polyamide that is 50% post-consumer recycled and 50% pre-consumer recycled.
Polyamide (nylon) is a synthetic fiber made from petroleum that produces extremely strong and versatile fabrics. Klettalmuthen uses recycled polyamide from industrial waste and post-consumer sources. For those of us who want to encourage people to send their used products for recycling, post-consumer waste is the first choice. Post-consumer waste materials used in recycled polyamide include discarded industrial fishing nets, old carpets, and hard fibers. Recycling polyamide adds more complexity to the production process, but the result is a reliable, long-lasting material that is lightweight, quick-drying, wind-resistant, and reduces waste while saving energy and resources. You can use what is. In 2009, Klettalmusen became the first outdoor company to use recycled polyamide in all of its backpacks.

65% Polyamide, 22% Polyester, 13% Aramid, 270 g/m², Kevlar® fiber.
By interweaving aramid fibers and elastic fibers, we create Kevlar® fabrics that are stretchy, soft, and highly durable. Kevlar fibers of different qualities are used for different functions and types of applications, making them unparalleled in ensuring durability and functionality in areas exposed to high amounts of wear and tear. . Typical applications include cuffs, storm flaps, knees, and the bottom of backpacks. All aramid fabrics used are Bluesign approved.

Backpack Technology:
4-S system - lightweight load transfer system
Klettalmusen's latest chest strap feature. Replacing the traditional sternum strap with a cord system provides greater adjustability and control. The cord can be freely placed using the loop webbing system. This adjustability makes it easy to adjust the tension and allows for quick changes on the move. Lightweight cords and hooks transform a traditional static sternum strap into a dynamic tool.

More Information of Klättermusen Fabric and Technology
Click here to learn more about Klettalmusen fabrics and technology.

Size Guide

- Designed for a long back body fit.
- Lightweight design designed for fast trekking.
- The carrying system on the back is fixed.
- Back length: 42-54cm.
- Back panel: Fixed panel, wide.

Size Chart

Measuring Guide

Back ultra measurement guide Locate the 7th vertebral body with your fingers. This is the part that sticks out when you tilt your head forward. It is important to keep your head straight when taking measurements. It might be a good idea to ask someone to help you. Start at the 7th vertebra and measure to the top of your hipbone. (Tip: Place a webbing belt around your lower back at the top of your hip bones so you know how far down to measure.)

service & warranty
Product warranty

sputnik shop is the official importer and sole distributor in Japan of all the brands we sell.

We offer a variety of product warranties and services to help you purchase with confidence.

All purchased products come with free shipping, returns, and size exchanges. We also guarantee against damage after use.

Officially imported product

This is the official shop of the import sales agent.

1 year warranty
Product warranty

We provide a free warranty against product defects for one year after purchase.

crush replace
crash replace

Even if it gets damaged after use, it can be replaced under the guarantee system.

free exchange
Free replacement

Size exchange is possible within 7 days after purchase

free return
Free returns

Free returns available within 7 days of purchase

free shipping
free shipping

All products have free shipping within Japan.

Trud [44L]