It has been Mystery Ranch's mission to create the best load carrying equipment in the world, they’ve set out to achieve the best fitting, most comfortable pack harnessing systems possible. Over the last few years, they spent countless hours measuring and fitting hundreds of different body types and logging the results to better understand how their customised fit interfaces with all different body types. The result has been a new sizing configuration that fits just about every human out there and unifies MYSTERY RANCH pack sizing across the board.
The key to a confortable pack load is a properly fitting backpack. Mystery Ranch have designed a more custom fit into their packs with simple sizing based off two measurements. To find the appropriate size waist and yoke for your pack, collect the following two measurements, then reference the sizing chart below.
1. Waist Circumference - Measure around your waist just above the top of your hip bones (roughly two fingers below your belly button).
2 Torso Length - Use a tailors tape or string and have a friend measure between the bony bump at the back of your neck (C7 vertebra) to the spot on your spine behind your belly button.
Small | Medium | Large | X-Large | |
Waist Circumference | 26-32" 66-81cm |
31-36" 79-92cm |
35-40" 89-102cm |
39"+ 100cm+ |
Torso Length |
15-20" |
15-20" 38-51cm |
17-24" 43-61cm |
17-24" 43-61cm |
Small / Medium |
Large / X Large | One Size | ||
Waist Circumference |
26-36" 66-91cm |
35-40+" 89-102+cm |
30-40" 76-102cm |
|
Torso Length |
15-20" 38-51cm |
17-24" 43-61cm |
15-20" 38-51cm |
In Between Sizes?
If you are between sizes on the waist belt, we recommend you choose the smaller size. It is very important that the waist belt is able to securely tighten around your hips. If your waist belt is too big you will have a hard time getting the weight in your pack to transfer from your shoulders to your hips. If you are between sizes on the yoke or if your measurements fall outside standard sizing, please contact us.
$1,259.10 NZD $1,399.00 NZD
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Collections: Backpacks, Bags & Accessories, MR Quick Order, Mystery Ranch, Mystery Ranch & Sitka Gear Outlet, Sub-Alpine
Category: 2025, Hunting, Men's, Multi-Day, Sample, Sub-Alpine
Type: Backpack
The hunt looks different with MYSTERIUM. Meet the largest expedition pack—built to support your long-game and to bag your big game.
Unused trade sample, may be some slightt variation to the finished model.
Like its namesake—the Bob Marshall Wilderness—The MARSHALL 105 with MYSTERIUM is expansive and full of surprises. Built for the hunter who demands tech-forward gear—crafted with as much thought and hard-earned knowledge as the preparation for their hunt—this expedition pack is our largest and most feature-rich execution of MYSTERY RANCH ethos. Whether you're out to fill your once-in-a-lifetime tag, or out just out for the long-haul, the MARSHALL 105 will haul everything you need for the pursuit. Sitting on the new MYSTERIUM Frame, you can load it from the top via the shroud access, get to all your gear from the side through the full-length, dual side zips and store a sleeping bag in the bottom Speedzip™. Finally, after a long stalk and a clean shot, the OVERLOAD® feature allows you to push the weight limits of what’s humanly possible on a packout over even the most challenging terrain.
Please note that we cannot sell these outside of New Zealand.
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