Product Code: 3G-AK-70

3G AK70 (RT)

Currently out of stock

The AK70 is a large expedition pack suitable for climbs in the Greater Ranges. It can manage a heavy payload of 28–35 kgs in tolerable comfort (we are not going to pretend that this is ever an enjoyable amount to carry), but still remains light enough to be used for a summit push. Its large volume is ideal for stuffing bulky, frozen gear into, whilst semi brain-dead from oxygen deprivation and encumbered with big clumsy mitts. As well as being remarkably light for such a capacious pack, the AK70 is substantial enough to impart a feeling of solidity and security, to the point that some people have actually tried bivouacking in one(OK, they were desperate – it's not really big enough).

The AK70 is the first of the 2016 3G packs to employ a roll-top closure system under the hood, replacing the draw-cord system found on the 2015 styles. Uniquely within the AK range, the AK70 also features a dual-wrap hip belt. Although not heavily padded or particularly large, this transfers the load onto the hips very effectively and enables heavy loads to be carried with some small modicum of comfort.

The AK70 is available in three back lengths: 1 (women), 2 (medium) and 3 (tall). Size 1 is only available in red.

PLEASE NOTE: The image shows the lid secured by G-hooks. These have now been replaced by alloy quick release buckles as can be seen on other AK styles

Next delivery is due late 2021.




Removable floating lid - for more versatile load options
Roll-top closure sytem - bag is fully waterproof
Side compression straps – quick and easy to fit or remove
Oversized back haul loop – easy to grab and clip
External lid pockets with welded seams
Top compression strap
40 mm webbing waistbelt with low-profile full-sized hip-fins
Two ice-axe holders
Stretch wand pockets

Technical Specifications

Capacity 70 + 7 litres
Weight 1650 g
Fabric 40% Kevlar / 60 % Cordura, 240 g/m²
Frame 7.00 mm 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 Rucksack Spares area 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 agents.


Red is available in all sizes.
Black will be available in November 2018

Delivery & Returns

All our products are shipped with UPS for quick, reliable and secure delivery. As most of our products are quite large and/or of high value, they will require a signature. We cannot deliver to P.O. boxes. All orders are dispatched the next working day after receipt (Monday to Friday). Typical delivery time is 2–3 days.

If you change your mind about your purchase, you can return it unused for an exchange or refund, provided it is within 90 days of receipt of your order and the item is still in its original packaging.

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