A dynamic mountain daypack for backcountry (and urban) assaults.

Retaining all the functional features of the original 3 DAY ASSAULT, our latest CL version is built domestically. Its signature 3-Zip design provides ready access to the pack's contents. Side MOLLE webbing affords to lash on customization to grow the pack's capacity. Side compression straps cinch down the load to minimize bulk when the pack isn't fully loaded. It features a built-in laptop sleeve to secure your devices for optimal protection. Two, zippered accessory provide quick access to smaller essentials.

  • 500D CORDURA® fabric and YKK® zippers
  • 3-ZIP design for easy, rapid access to the interior
  • Side MOLLE webbing provides lash on expansion to increase carry capacity
  • Front daisy chains provide lash on expansion to increase carry capacity
  • Side compression straps to minimize bulk when not fully loaded
  • Built in laptop sleeve fits laptops up to 17 and doubles as a hydration pocket
  • Waist belt tucks into compartments beneath the water bottle pockets when not in use
  • Interior accessory storage compartments
  • Two zippered access lid pockets for accessory storage
  • Made in the USA
  • Volume: 1800 cu-in (30 L)
  • Weight: 4.6 lbs (2.1 kg)
  • Dimensions: 23"x15"x11" (58x38x28cm)
  • Country Of Manufacture: USA
  • Intended Use: Everyday Carry

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#).

PLEASE NOTE: All Closeout Sales are Final

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:


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


Boulder Mountain Repair:

2744 47th St.

Boulder, CO80301



Rainy Pass Repair:

4415 Stone Way N.

Seattle, WA98103


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 (17)

I like the classic outline and add new label located at outside, show "MADE in USA".
Although the product i selected is currently unavailable, but I will never give up to check the web everyday.
Thank Mystery ranch to provide excellent product in the World.
I purchased this bag with the intention of using it as an everyday bag to go with me anytime I leave the house. I pack a simple change of clothes, a snack, deodorant, my firearm, multitool, pocket knife and some pen and paper. There's is still a lot of room left for anything else I'd need to stowe away during my course of the day. This bag is big but can be cinched down and it becomes a very mobile transportable everyday bag. It has been worth every penny. The materials and craftsmanship makes you proud to own one! If anyone is looking at this as just an EDC bag and you don't go hiking much if at all this bag will fill that EDC role and perform amazingly. Its the most comfortable high end bag I've used to date.
I like this bag a lot. I use it daily, for school (college), regularly on hikes, trips, camping, biking, etc, and it meets every need. It's made well, out of durable materials. I don't worry about damaging it on anything, nor do I worry about the things inside the bag getting damaged (when used within reason, of course). It's not an lightweight bag though, just in case you weren't aware of that. That being said, it's not overly heavy for it's construction, and it's zippers are top of the line. I bought it with the padded waistband, which is a must if you are putting any meaningful weight inside, because between the should straps and the waistband, loads are carried very comfortably, easily, and securely for long periods of time. The top lid does tend to flop down over the main pocket then I don't want it to, but that's not a big problem, just a minor annoyance. Also, the strap lengths are quite long, and I'm not a big fan of the roll-over-velcro-up retention system, because it can make adjusting straps troublesome. Owner for nearly a year, and feel this deserves 5 stars, for completely meeting my expectations.