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CRUX AK57 3G is the big brother to the AK47 3G. 
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 welded construction, making it highly water-resistant. (Of course, water can still get in through the top access if the bag is fully submersed).
The only feature alteration is the ice-axe carrying system which has been updated to stay abreast of modern tool development
The AK57 is the big brother to the AK47, 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 (code for us more normal climbers, who don’t like to cut our safety margins like the crazy, extreme guys do). The AK57 is available in three back-lengths.
To understand just how versatile this seemingly simple rucksack is, look here.

57 + 5 litres / 3475 + 420 cu. in.

Weight: 1220 g / 2 lb 11 oz

Fabric: 40% Kevlar / 60 % Cordura, 7 oz/yd² / 240 g/m²

Frame: 7.00 mm / 0.275 in Ø tubular titanuim full frame (removable)

Sizes: 1 (short), 2 (medium), 3 (long)


  • Adjustable and removable floating lid 
  • External lid pocket with welded seams
  • Side compression straps – quick and easy to fit or remove
  • Oversized back haul loop – easy to grab and clip
  • Top compression strap
  • 40 mm webbing waist-belt with low-profile full-sized hip-fins
  • 4 mm drawcords – for emergency rap anchors
  • Internal sleeve for hydration bladder
  • Two ice-axe holders
  • Stretch wand pockets

Technical details


Crux rucksack feautures

SizeBacklengthTypical height range
145 cm160 – 170 cm
250 cm170 – 180 cm
355 cm180 – 190 cm

“Crux guarantees all products for ten years from the date of purchase to the original customer. This guarantee is against defects in materials and craftsmanship. Should any flaw appear due to defective materials or craftsmanship, crux will repair or replace the product. If damage is determined to be the result of normal wear and tear, abuse or accident, repairs will be made at a reasonable cost. This guarantee does not affect your statutory rights.”

Data sheet
Material40% Kevlar / 60 % Cordura, 240 g/m²
Weight1250 g
Volume57 + 5 (L)
Warranty10 years
Made inChina

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