BACK PANEL
The back panel is the most important part of a custom backpack.
When the fit is right, the backpack sits naturally against your spine and carries comfortably even under heavy loads — often without needing a frame at all.
The recommended torso measurements are only a guideline. A tall person may still have a short torso, and vice versa.
Available sizes:
S - 46 cm (160 - 175 cm)
M - 50cm (175 - 185 cm)
L - 54 cm (185 - 200 cm)
How to measure:
Measure the length of your back from the point where the shoulder straps sit on your shoulders down to the base of your spine, where your lower back begins to curve outward above the hips
If you already own a backpack that fits you comfortably, measure the back panel length from the top of the shoulder straps down to the bottom of the backpack.
VOLUME
We can build any volume you need.
A larger-volume backpack does not necessarily mean a taller back panel. Volume is usually increased in depth instead.
The intended use of the backpack is very important. For technical climbing, we design the pack so it does not interfere with natural movement — such as lifting the legs high or tilting the head back while climbing.
MATERIALS
ULTRA™ by Challenge Sailcloth
Challenge ULTRA™ is one of the highest-performing UHMWPE composite fabrics in the world.
UHMWPE (non-branded Dyneema® or Spectra®) is, gram for gram, approximately 15 times stronger than steel. It is naturally water-resistant, UV-resistant, and extremely lightweight.
We recommend this fabric for all alpine activities.
Colors:
White
Black
Tangerine
Raspberry
Electric Blue
Hunter Green
Dyneema® Composite Fabric
Formerly known as Cuben Fiber, Dyneema® Composite Fabric is a high-end laminate material made from non-woven Dyneema fibers.
Dyneema® offers one of the best strength-to-weight ratios available and is approximately 15 times stronger than steel.
Available Colors:
Black Ice — 102 g/m²
Transparent White — 50 g/m²
SHOULDER PADS
Our shoulder straps are one of our signature features.
We keep the exact construction method private, but they are made using memory foam and breathable fabrics that maintain their shape and comfort over many years of use.
We also offer semi-running shoulder straps. These are not full running vests, but they include padded shoulder support and stretchy storage pockets on both sides.
Semi-running shoulder straps are available as an upgrade for an additional €60
All shoulder straps include:
Daisy chains
Removable chest strap
STYLE OF THE BACKPACK:
You can either:
Build a backpack based on one of our existing models
Create something completely unique
FEATURES
CLOSURE
Roll Top
Advantages:
Excellent weather protection
Keeps water from entering the pack
Disadvantages:
Requires at least three rolls for a fully secure closure
Slightly slower to access when packed full
Cinch Top
Advantages:
Fast and simple to use
Can be opened one-handed with a Cyberian lock system
Disadvantages:
Small amount of water may enter through the opening in heavy rain
HIP BELT
Options include:
Simple 38 mm webbing hip belt
Padded hip belt + 30 EUR
Hip belt with padded zippered pockets + 60 EUR
Available buckle options:
Plastic side-release buckle
Aluminium avalanche safety buckle
BLADDER POCKET AND A HOSE TUNEL
An internal hydration bladder pocket can be added, with a hose exit port on either the left or right side of the backpack.
ICE AXE CARRY
The standard attachment system uses:
A removable ice axe toggle
Elastic drawcord retention
For ice climbers and alpinists carrying two tools, we also offer an ice axe tunnel system.
HELMET CARRY
We do not offer a dedicated helmet holder, as helmets can easily and securely be attached externally using the front or top compression straps.
AVALANCHE COMPARTMENT
We can add dedicated sleeves for:
Avalanche probe
Shovel handle
These can be placed either:
Inside the pack
Inside the front pocket
The shovel blade fits in the front pocket (mountaineering model)
ZIPPERED POCKET
Zippered pockets can be added wherever you need them:
Inside the main compartment
Inside the front pocket
On the side panels
