Built Worldwide

A spacious daypack or light, overnight backpack.

This women’s specific, mid-size, technical daypack offers ready access to your hiking kit via our signature, 3-ZIP design. The Cairn is a versatile pack with an ideal capacity for most of your outdoor adventures. Long days require ample agua, so the Cairn is both hydration compatible as well as offering easy-to-reach water bottle pockets. For smaller essentials you want to keep organized, there’s a spacious zippered pocket built into the lid of the pack.

  • Women’s specific adjustable yoke
  • 3-ZIP design for quick, easy access
  • Zippered lid pocket to organize essentials
  • Water bottle pockets keep hydration handy
  • Hydration reservoir compatible
  • Double-layered bottom for long-haul durability
  • Volume: 2300 cu-in (38 L)
  • Weight: 3.13 lb ( 1.42 kg)
  • Country Of Manufacture: Philippines / Vietnam
  • Intended Use: Climbing, Daypack, Hiking

Frequently 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 406-585-1428

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.

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 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)


Boulder Mountain Repair:

2200 Central Ave. Suite F

Boulder, CO80301

(303) 499-3634


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 406-585-1428.

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

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.

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 406-585-1428, and we can get you set up with a Return Authorization (RA#).

If you are in need of a different size yoke or waist belt, please give us a call at 406-585-1428.

Why did you add production facilities 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 406-585-1428

I bought this pack July 11, 2016 and I liked the fit and design when I tried it in the store. I have since then used it a lot as I do about 3 long day hikes/week (12-16 miles/days with lots of vertical) and there are some major improvements that need to be made to this pack;

1. There needs to be more structure and back support so that it doesn't feel like your carrying a sack of potatoes (meaning it feels like your carrying dead weight). I even gave my pack the nick-name "SPUD". The pack also sits way too low on your back and no matter how I try to adjust it, the design of the pack (when the hip belt is tightened in the correct place on your hips) makes the bottom of the pack sit very low on your bottom...(F.Y.I I am 5'8 and weigh 125 lbs)

2. The pockets on the hip belt need to be larger so that one can fit a phone inside it as most people use their phones to take pictures and need to be able to access them easily.

3. At a price of $179 a rain cover should be included in the purchase. Most larger day-packs in that price range include a rain cover. As I hike in all kinds of weather I end up using mine quite frequently and I had to try to find one on-line that fit the Cairn.

I have used other day-packs (Osprey, Deuter and Gregory) and they all have much more back structure to distribute the weight of the pack better and to carry a load more easily and in a more stable way. I do a lot of off trail scrambling and this pack just feels like it's in the way... I also never had a pack that goes that far down on your butt. Definitely gets in the way when your doing boulder scrambling.

I love the Cairn packs zipper design. It is awesome to be able to zipper the front open and find whatever you buried in the bottom of the pack without having to empty the entire pack first. I also think the loops on the front are great as you have loads of options to hang things on the pack with a carabiner (like bear bells). Another think that's great is the large side pockets that fit a large Nalgene bottle without any problem although it is a little problematic to reach them when your hiking on your own and don't want to take the pack off.

As much as I want to love this pack and have tried to make it work (me and "Spud" have done a lot of miles together) I have to admit that I will be replacing him very soon...