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A backpack for all your transcendent, mountain adventures.

The SPHINX features a long, center-front zipper, allowing you to see and access all your gear. With our sturdy, lightweight Adventure frame, it provides a supportive, stable, comfortable carry. Designed with two vertical torpedo pockets and a removable lid, this pack has all the features necessary for your next backcountry mission.

  • 210 Robic honeycomb/420 Robic nylon fabrics
  • YKK® zippers
  • Top-loading design for easy/secure packing
  • Two vertical torpedo pockets for external access
  • Water bottle pockets keep hydration handy
  • Hydration reservoir compatible
  • Removable lid
  • Removable, double-wrap re-direct waist belt
  • Adjustable ice axe loops for trekking poles or ice tools
  • Adventure Frame with adjustable yoke
  • Volume: 4272 cu-in (70 L)
  • Weight: 5.3 lbs (2.4 kg)
  • Dimensions: 38"x17.5"x12" (97x44x30cm)
  • Frame System: Adventure Frame
  • Country Of Manufacture: Philippines / Vietnam
  • Intended Use: Backpacking, Lightweight Backpacking, Weekend Backpacking

Frequenty Asked Questions

We're moving to a kitted system so that we can design and build packs and frames that are optimized for integration based on the function of the product. There are some cool new things in the works. In the meantime, we may be able to accommodate pack only orders based on available inventory - contact MR Customer Service or call 1.833.548.1999

As much as we would like to be able to offer our military/LE/ firefighter customers a discount on our packs, we have government contracts in these markets that prevent us from doing so.

MYSTERY RANCH accepts returns for a refund within 60 days of the original purchase date. Items must be returned in brand new, unused condition, and shipping charges are non-refundable. Please give us a call at 1.833.548.1999, and we can get you set up with a Return Authorization (RA#).

The only repair that we can offer on Dana Design products is a replacement back foam pad on packs with the ArcFlex body panel design. We can ship the foam to you and you can easily install it yourself without having to send the pack in to be repaired. Replacement back foam pads are $15.00 plus $5.00 for shipping. For any other Dana Design pack repairs, please contact Marmot or try the following reputable gear repair companies:

Marmot Warranty:

888.311.2900

Mon - Fri : 7:30am - 5pm (PST)

marmot_warranty@marmot.com

Boulder Mountain Repair:

2744 47th St.

Boulder, CO80301

303.499.3634

repairs@bouldermtnrepair.com

Rainy Pass Repair:

4415 Stone Way N.

Seattle, WA98103

206.523.8135

We are not set up to perform custom work on individual orders and no, we cannot build a pack for you in a custom color. If your concern is in regards to sizing please give us a call at 406.548.3234.

Also, please know that modifying your MYSTERY RANCH pack may void the lifetime warranty, so please think first before you start ripping straps off and cutting holes in your pack to make it more aerodynamic for winged flight.

First, start by washing your pack with hot water in the shower. Use a mild detergent like Dawn to get minor dirt and grime out of your pack. Dry the pack out of direct sunlight. DO NOT USE HARSH CHEMICALS TO CLEAN YOUR PACK. If you need to get odors/blood out of your hunting pack, please use Atsko Sport-Wash Laundry Detergent

For full cleaning and care instructions, see here

We always recommend that you size down for the waist belt. If you fall in-between sizes on the yoke, we recommend that you size up.

If you are in need of a different size yoke or waist belt, please give us a call at 1.833.548.1999.

For more information about the MYSTERY RANCH Pro Purchase program and to apply, click here.

Why did you add a production facility in the Philippines and Vietnam?

MYSTERY RANCH added these facilities because of the increased demand for our product. We needed the additional facilities to build for customers who don't require (Berry Compliant) US production and / or don't want to pay a premium price for products built in the U.S.A. With these additional offshore facilities, we are able to focus our domestic facilities on the Berry Compliant orders.

How do I know if the pack I want is made in the US, PH, or VN?

It will be noted on the product page on our website and you are always welcome to call us and ask if you don't see the "US" or "world" icons that denote production location.

Is the quality of the packs the same?

Yes, absolutely! We carefully select the highest quality materials and ensure that all production facilities adopt our quality standards and techniques to deliver products consistent with the MYSTERY RANCH legacy. Our distributors who have received product from the US, PH, or VN are unable to tell the difference without looking at the label.

How do you ensure consistent quality?

Our factory resources use the protocol defined by our team in our production packages in order to deliver consistent quality gear. Upon introduction of new products, our product engineers visit our factory resources to work with them to develop new styles. As the product goes to production, our QA and QC teams will then visit our US, PH, and VN factories to ensure the finished goods meet our MYSTERY RANCH standards.

For more information please contact MR Customer Service or call 1.833.548.1999

Reviews (3)

I've rocked the Osprey Volt, The Aether and even tried my hand at some other packs. But after buying and using the Sphinx, I'll never look anywhere else. You can just feel the quality of materials and strength of the fabric and zippers on this pack. I'm 6'3 and about 190lbs with a torso size in between 22-23" and the XL is absolutely PERFECT for me. The adjustment is easy to do and dial in. I cannot say enough good things about this pack. I've had it on my wishlist for the past year, and just recently made the decision and purchased it. That was the best decision ever. I cannot wait to put thousands of miles on this bad boy! Thanks Mystery Ranch!!
Having been into most of the 10th Mountain Division huts in the past 25 years, and being a relative gear minimalist, this one has hit the sweet spot.
A) if you take too much gear, then you can lash things on, stuff under lids, or secure with existing straps with little to no wobble.
B) if you take too little gear, this compresses down nicely, with no wobble, and will still hold the ever-necessary shovels on the outside or inside, plus bulky camera gear, plus all that gourmet food (and sleeping bags).
C) super comfortable, super adjustable, even on the fly.
D) I have even lashed on another pack to the back of this one (desperate times call for desperate solutions) and comfortably carried way too much gear.
E) buy it and enjoy with impunity.
Been backpacking since the '70s and have owned just about every pack out there. The internal frame revolution brought discomfort and awkwardness, but we embraced it because it was "better". I've been through several internal frame packs over the years and hated them all. They either dig into my boney hips and cut off circulation to my legs or they make my shoulders hurt. And they are never convenient to pack.

Along comes Mystery Ranch and I've found the ultimate pack. The harness system distributes weight properly and is easy to adjust for a precise fit. No circulation cutoff, no shoulder pain, just right. And they're bombproof and easy to pack. The revolutionary center zip is truly useful.

I liked my Sphinx so well that I went out and bought a Scree and a Ravine. Done - just refreshed my packs and put all my others on the auction block. My only sadness is that I really can't justify buying any more packs by Mystery Ranch.

This Sphinx is the load master. 35lbs, 40lbs - carries it well. Sure, you'll feel the extra weight, but no pinch points, no cutoff of circulation. I can't say enough good things about the design and comfort. And hey, the little waist belt pockets are actually useful - you can carry more than just a few gummy bears in them.