£159 / €189 / $199

The AX45 is literally the old 2nd generation AK47 cut from a different cloth. Instead of the AK's famous Kevlar fabric, the AX45 has a lighter Cordura fabric with a 3 mm Dyneema ripstop developed exclusively to our specification. Elsewhere, we switched the full frame to twin tubular stays and downsized all the webbing (which adds a surprising amount of weight to a rucksack).
Although the carrying harness is identical to that of the AK sacks, the AX45 has a new feature – the hip belt can be fully removed, leaving just the webbing to fasten around your waist.
The AX45 comes in a two back lengths – regular (for those up to around 5’11” or 180 cm) and long.




External lid pocket
Security pocket on inside of lid
Side compression straps – quick and easy to fit or remove
Oversized back haul loop – easy to grab and clip
Top compression strap
Dual drawcord closure system on extension sleeve
3 mm Tendon drawcord – can be used as emergency rap anchors
40 mm webbing waist belt with removable hip belt
Internal sleeve for hydration bladder
Two ice-axe holders
Wand pockets
Reinforced, double-layer base panel

Technical Specifications

Capacity 45 litres
Weight 1150 g
Fabric 15% Dyneema / 85 % Cordura, 150 g/m²
Frame Two 7.00 mm tubular titanium stays (removable)

R (regular)
L (long)

Spares & Repairs

If you break any buckles or your frame (it does happen), then don't panic. We have replacement parts for nearly everything. Please go to the spare parts section of our online shop.

Crux rucksacks don't often need mending, but they are not completely immune to abuse. Should your sack ever need repair, then please click here for details of our recommended repair companies.

Knowledge Base

For more information about our backpacks, please click on the following links below.
Sizing and fitting of crux backpacks
The physics of backpack design
Using the features of an AK pack