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Mystery Ranch
Terraframe 3-Zip 50L Backpack

4.885245901639344 out of 5 stars
61 Reviews


Size Chart


Why We Like The Terraframe 3-Zip 50L Backpack

After years of requests, Mystery Ranch decided to build a backpacking-focused pack with its OVERLOAD feature, a longtime favorite from years of hunting and military packs. The Terraframe 3-Zip 50L Backpack uses rigid, carbon fiber frame stays as a suspension system that's both torsionally flexible and supportive of excessive loads, your secret weapon for going big in the backcountry. This internal-external hybrid Guidelight frame allows you to detach the pack from the frame, creating an overload shelf for adding additional gear you can't fit into the pack.


  • A burly pack for backpacking with heavy or awkward loads
  • Lite Plus Cordura provides durability that won't weigh you down
  • Carbon frame delivers rigid, expandable support up to 150lb
  • 3-zip access opens the pack wide for efficient packing or searching
  • Hydration reservoir-compatible for quenching thirst as you travel
  • Multiple pockets and daisy chains provide storage for smaller gear
  • Compression straps can expand to hold gear on the overload shelf
  • Telescoping yoke custom fits most adult torso lengths
  • Item #MYTD00V
330D Lite Plus Cordura
50L (3051cu in)
Terraframe, Guide Light MT
Shoulder Straps
padded, adjustable
Waist Belt
padded, adjustable
Hydration Compatible
2 zippered lid, 2 stretch-woeven water bottle
Gear Loops
Trekking Pole Carry
Autolock SJ buckles
Weight Capacity
28 x 15 x 13in
Claimed Weight
Manufacturer Warranty

Overall Rating

5 based on 61 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 1 reviews
4 Stars - 5 reviews
5 Stars - 55 reviews

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


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5 out of 5 stars

February 10, 2024

Great backpack

I've used it several times
Size Bought:

This is a great backpacking bag. Very durable and wears very comfortably. I plan on using it for backcountry camping and elk hunting. I should have no problem packing in 4 to 5 days worth of gear and packing out any animals I harvest. I like how the bag is designed, simple yet very functional and with it's carry capacity there are no limits on what you can pack.

5 out of 5 stars

November 19, 2023

Great pack

This pack is well built and really comfortable. With the three zip system, it's easy to get in and out of the entire pack, instead of just having the top opening. The waist belt and shoulder straps have really thick padding and is one of the best fitting packs i've ever had. The ability to separate the pack from the frame for extra carry capacity is really nice to have. This is my favorite pack and will get lots of use.


Originally reviewed on

5 out of 5 stars

November 16, 2023

Terraframe 3-zip 50

I've had 3 hikes with this pack (8, 5, and 4miles) loaded less than 20lbs. I did have 2 full nalgene silos in the pockets. Had some initial adjustments to make due to hip soreness. Once adjusted carry was great. Have a 14 miler coming up, planning 25-30 lb load. I have no concerns. I may try out the overload feature on that hike.


Originally reviewed on

5 out of 5 stars

October 29, 2023

Great pack!

I bought this for 3 day section hikes. I have a lot of "ultralight gear" but dislike super lightweight packs. The 50L comes in around 5lbs and is super comfortable once you figure out how to adjust it. I used it once in a late season hike, carrying heavier loads than i normally would, and it remained super comfortable. The hipbelt rules. Im a 34" waist and have room for 2 good sized molle pouches on each side. The side pockets are great for water bottles. I love the 3 zip. It makes it easy to get stuff from the bottom of the bag.. Only cons are - it has no drag handle. I don't like grabbing it by the top of the carbon frame. I emailed mystery ranch, they assured me it was safe to do so. But I personally dont feel comfortable doing it. The bag isnt expandable, 50L is 50L, it felt smaller once i started filling it. Once its full theres no roll top closure or anything you have to get it to zip. I was used to overstuffing USGI molle rucksacks. There's lots of webbing on the pack but it felt limited. Maybe I've just got to play around and figure it out. The vertical rows feel less useful, i wish it had more horizontal webbing. Its an expensive pack, i dont know how I feel about modifying it Overall its a great pack. It does what I need and my complaints are minimal. Im working on modifying a MR pack lid from one of the terraframe hunting packs to fit this pack. It'll be nice for those cold weather hikes where i need just a little extra space for clothing.


Originally reviewed on

5 out of 5 stars

September 14, 2023

Great rack.

The pack has been great so far without fully loading up. Looking forward to multi day hikes.


Originally reviewed on

3 out of 5 stars

August 28, 2023

Pack Is Amazing, Quality a little dissappointing

I have used this pack for two years now for backpacking a few times and 2 elk seasons here in Montana. Love the pack. It rides well, very adaptable to different tasks, have yet to run into any volume issues, and can handle heavy loads. Only downside is some of the quality. Had a buckle break on the bottom that was holding my sleeping bag while I was hiking last year. I am not sure how to replace it since the tab securing it is a sewn loop. Then one of the side pockets has torn open. Not sure how it happened since I have only had a fly rod in that pocket. Would love to give this pack a 5 star, but for the cost, the quality is lacking.

AJ Rose

Originally reviewed on

5 out of 5 stars

August 14, 2023

Great first trip

Only done one trip thus far, but that was a week of backpacking/back country camping around CO & UT. Did around 10 miles a day. Did 2 days hiking with stuff packed in an ozone scent crusher on the overload, the rest without it. Outfitted mine with a hip bag, a ripstop, and a surplus admin pouch. Comfort, access to goods on this pack are superb. Thus far no issues from a durability perspective but this only has 1 trip under its belt. Fabric and features seem of good quality, so I anticipate many years of use. The only hitch I was about the frame; because it juts out higher than the top of the pack when it's got contents removed and relatively 'sharp', I snagged the mesh on my tent in Canyonlands. The ants coming in and biting me let me know to go ahead and grab that duct tape. Not really anything the manufacturer needs to do, just part of my transition from a different design. Oh and last if you use the overload feature be mindful if you carry a reservoir, your line will have to be longer to drink while carrying. I was able reroute it and clip high on the shoulder to get a drink, but you may want to test this on your design before hiking out to ensure it works for you. I added a few photos of my capacity test, my pack I out there. My dimensions - 5'10" 140 lb female. Fits perfect.

user image

Originally reviewed on

5 out of 5 stars

August 10, 2023

Great miltiday bag

Purchased this for a multiday hike my wife and I were going on in order to carry all our gear, couldnt be happier with it. The quality of the seams, comfort carrying about 60lbs of gear, and easy access pockets up top were exactly what I was looking for without a bunch of random pockets that wont be used.


Originally reviewed on

5 out of 5 stars

July 12, 2023

For a long time, thought it was the best...

I carried it on my back for a year now and put it through hell and thought that this bag couldn't get any better... the beg proved me wrong. The list of things that I have put it through would blow your mind and then the bag blew mine ... i have a full pack with the overflow stuff being used and I still hauled a 4 point whitetail 3 and a half km to my truck and still haven't had any back problems. This and the 65... they are both "must haves"

Jojo and Leticia

Originally reviewed on

4 out of 5 stars

April 10, 2023

No cons or faults yet…

Purchased for many adventures to come. The downeast weather won’t give in just yet so this is not a full review. The suspension system is amazing! Compared to other brands such as Kelty and Mountainsmith (two opposite sides of the spectrum), the adjustments are simple, reliable, and quick. When loaded for a3-day trip, the pack conforms and rides great with zero lateral play. The tri-zip opening makes access a dream, with no worries about all gear spilling out. If you’re a gear-junkie, the lack of external pockets may bother you. I like it because it keeps the whole unit slimline. My only complaint so far is the lack of color assortments. While my inner-Marine appreciates the loden, the only other option is bland yet out of place in most environments. For the price it would be nice to see the pack fly come with it.


Originally reviewed on