The Ultimate Alpine Ski-touring Pack

I recently finished a one-of-a-kind ~35 liter Alpine backpack completely custom made for an Instagram follower who reached out to discuss a custom version of The Alpine Pack I recently posted about. We spent a lot of time together designing the pack, carefully selecting the features, and studying his previous backpacks for important points to consider and I think we achieved something really amazing.

I must admit, it was hard to let this one go after about 60 hours of combined work over a couple of months. But I think that particular bag will have the life it deserves, filled with hiking, climbing and ski touring equipment!

This backpack is a slightly bigger version of the previous alpine pack I made, but is built like a tank! It has many reinforcements on all four sides, and other areas prone to wear and tear. It is made almost entirely out of white Ecopak Ultra EPL 400 (a hybrid UHMWPE and recycled polyester fabric which is incredibly abrasion resistant) and boasts sturdy padding and a hip belt, a set of ski attachments (front and A-frame options), dual ice-axe attachments, rope tie-ins and a relatively huge roll-top extension for the approach.

The need to accommodate long hours of climbing and belaying meant that the bag had to have a relatively low profile when closed to not interfere with a helmet when belaying from below, and is therefore a little “fat” compared to previous designs. That being said, its owner being in fantastic shape, the increase in diameter should not interfere with arm movements in the slightest.

In the end, the complete pack weighs in at exactly 700 grams, which I am really proud of achieving with as little compromises as possible.

The back panel is of a relatively simple construction, and also out of Ecopak Ultra EPL 400 for its abrasion resistance if the pack needs to be hoisted. The complete back panel, the shoulder straps and hip belt are padded with high quality closed-cell foam for durability and to bring a little comfort when carrying high loads.

The interior is also very lean, and only offers a couple of gear loops and a small zipper pocket for IDs and other small items. All the seams and the load-bearing bartacks are reinforced and double stitched to prevent fraying of the Ultra EPL fabric in case the backing material starts to degrade. In retrospect, I think I would reinforce the seams and bartacks with a white backing fabric next time to blend in with the rest of the pack better. Since I make that backing “tape” myself, I can easily make it in the colors/fabrics of my choosing. This particular black liner is a 210D Diamond ripstop polyester fabric with polyurethane coating to act as a mild waterproofing tape as well..

The back panel of the Ski Touring pack

The back panel is probably the most interesting part of that pack. Since it is an ultralight children’s pack, I added a shoulder strap’s height adjustment option to let the pack grow with the owner.

The back panel also contains a padding sleeve with a hook and loop tape closure to be able to add a foam pad and some more structure is required.

The daisy chains will be taking some serious load when the pack is full and skis are hanging on its sides. So the daisy chains will need to hold under strain. The achieve that, the pack’s fabric is carefully strengthened along the daisy chain. In the following pictures, the daisy chain is blending with a folded seam. It also is the point where the padding sleeve is sewn into the back panel, which backs the fabric without any specific weight penalty. Nonetheless, the seam is sealed and hidden with a strip of VX21 RC, which also adds strength to the bartacks, totaling the layers of fabrics to 3 behind the webbing.

The rest of the back panel is relatively simple. Thee is a thin layer of closed-cell foam and 3D mesh on the lower part, decorated with a mountain-top pattern.

The shoulder straps lower attachment is a standard load-bearing triangle and webbing designed to use with a nylon ladder-lock buckle. A lightweight hip belt is also important, since the pack loaded with skis would have an unusually low center of gravity. I added a removable gear loop on the hip belt

There you have it! These were the most important details of the pack’s back panel.

Since you read it until the end, here are a couple of bonus pictures that did not make the cut.

Have a great day!

Feature breakdown of the Slumber pack

It’s always difficult to make a distinction between nice-to-have and must-have features. Here is a breakdown you might find useful in your deliberations.

A3mm Cord load lifter with LineLoc.
BCam side release buckle on 15mm strong webbing.
CDaisy chain out of strong 15mm webbing.
DSide compression systems out of cord, hook, and LineLoc quick release buckle.
ESide pockets (different heights for different purposes).
FHip belt out of 25mm webbing and high-quality quick release.
G+HGear loops out of 15mm strong webbing.