The AX40 is the same size as the AX35, but with a floating, removable lid (instead of a fixed one) for greater versatility in packing different load volumes.
For its size and weight, the AX40 is extremely well specified, having every necessary feature that is expected of an alpine sack, yet at coming in at only just over a kilo, sacrifices nothing of overall robustness and durability. It is seriously tough. The harness borrowed from the AK sacks has a decade’s worth of refinement; balancing comfort and support with a minimalist profile. This carrying system is probably the best you'll ever find on a climbing sack anywhere in the world.
The AX40 is available in a single, unisex back length.
|Fabric||15% Dyneema / 85 % Cordura, 150 g/m², ripstop|
|Frame||Two 9.00 mm x 1.5 mm flat titanium stays (removable)|
One size only
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 1-2 days.
If you change your mind 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.
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