3G AK57 (RT)
£449 / € 499 / $479

The new 3rd generation version of the AK57 is identical to its predecessor in features and function. The two major differences are a new fabric – 40% Kevlar instead of 28% previously – and an all-welded construction, which, combined with the new roll-top closure system at the top of the main compartment, makes it completely waterproof. The only feature alteration is the ice-axe carrying system which has been updated to stay abreast of modern tool development (so many have neither adzes nor hammers).

The AK57 is the big brother to the AK47 and features the removable floating lid of the AK47-X. Its name may not be as catchy, but that doesn’t mean it’s short of attitude – it’s just more understated. The larger capacity of the AK57 makes it a suitable pack for lightweight expeditions on high(er) altitude climbs, or for more traditional, less technical alpine routes.

The AK57 is available in three back-lengths.





Removable floating lid – for more versatile load options
External lid pocket with welded seams for water-resistance
Roll-top closure system for a completely waterproof main compartment
Oversized back haul loop – easy to grab and clip
Top compression strap
Side compression straps – quick and easy to fit or remove
40 mm webbing waistbelt with low-profile full-sized hip-fins
Two ice-axe holders
Stretch wand pockets
Welded construction throughout

Technical Specifications

Capacity 57 + 5 litres
Weight 1475 g
Fabric 40% Kevlar / 60 % Cordura, 240 g/m²
Frame 7.00 mm Ø tubular titanium, full frame (removable)

1 (short)
2 (medium)
3 (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


All colours and sizes are in stock.