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Eldner 2.0 Lumbarpack [2L]


Eldner 2.0 Lumber Pack

2L Lumberback

A 2 liter lumbar pack that holds your essentials while trekking, trail running, ski touring and more. The adjustable strap allows you to carry it around your waist, across your body, or over one shoulder.

The strap has an aluminum quick-release buckle and can be folded using a webbing loop. The top bungee cord can be used to secure items such as a light rain jacket. An elasticated mesh pocket on the front allows you to store items you need quickly. Klättalmusen backpack accessories can be easily attached to any part of your backpack using cord straps or toggles.

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

- Long straps allow you to carry it crossbody, over your shoulder, or attach it to other backpacks
- Rear belt loop for attaching to backpack waist belt
- Aluminum quick release buckle
- Aluminum toggle for attaching webbing loops
- Quick attach bungee cord with hook
- Main zipper puller with whistle
- External mesh pocket convenient for storing small items
- Triangle reflector for increased visibility


- Weight: 136.5 g
- Water Column: > 1,500 mm
- Dimension: H13 x W27 x D12
- Recommended Weight: 2 kg


Main Fabric:
Retina®, Econyl® 400D
40% Polyamide, 30% Post-Consumer Recycled Polyamide, 30% Pre-Consumer Recycled Polyamide, 400D, 251g/m², PU Coating, Front: SkylCoat, Back: TPU Laminate, bluesign® approved fabric, GRS - Global Recycled Standard, Fluorocarbon free
The idea for Retina® 400 Denier Dobby was to create a fabric for use in mid-range packs with an emphasis on durability and sustainability. These packs are used for climbing, where you're carrying a heavy load for long periods of time on the trail, experiencing friction from the surrounding nature, and being dragged up against rock walls. To meet these demands, the fabric is made with a dobby structure, and the surface is coated with a sky coating to make it water repellent. By applying the coating in this way, the water repellent function can be maintained for a longer period of time. The back has a PU coating with a water pressure resistance of 1500mm. The surface fabric is made of 400 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:
Butterfly Bridge - Harness Load Transfer System

Klettalmusen's butterfly bridge harness system is based on the principle of "carrying with bones, not muscles." Instead of traditional solutions, butterfly bridges implement a load transfer system that distributes the load over a wider area. By applying load to the bone protrusions, we avoid obstructing blood circulation to the muscles and allow them to move more freely. As a result, your circulation can work unimpeded, reducing pain and fatigue. The butterfly bridge system is especially useful for trekkers who support heavier loads than normal.

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

Size Guide

- Can be attached to all packs larger than 30L, and can also be used alone.
- Regular fit design
- Back length: 47-52cm.
- By using the attachment toggle, you can place it freely on the loop webbing.

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.

Eldner 2.0 Lumbarpack [2L]