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Mystery Ranch
Urban Assault 21L Backpack

4.705426356589148 out of 5 stars
129 Reviews
Current price: $83.37 Original price: $138.95
40% off


Size Chart


Why We Like The Urban Assault 21L Backpack

That beat-up old backpack you bought back when you started college is becoming more of a liability than a dependable gear hauler. Now that you're a functioning adult (well, sort of) it's nice to have a bag that will double as a laptop hauler when you're headed to the office and a jacket and snack receptacle when you're biking down to your favorite bar. The Mystery Ranch Urban Assault Laptop Backpack will handle the rigors of your day-to-day life with a convenient 3-Zip design, built-in tablet or laptop sleeve, and durable Cordura fabric that won't wear easily with time—unlike that old beater pack that's been dropping paperbacks left and right.


  • A simple daypack ideal for work, travel, and everyday life
  • Convenient 3-Zip design grants quick access to essentials
  • Burly Cordura fabric withstands serious wear and tear
  • Built-in sleeve fits laptops and tablets (up to 15in)
  • Lid pocket with key clip
  • Based out of Bozeman, Mystery Ranch designs packs that last
  • Item #MYT000L
500D Cordura nylon
21L (1281cu in)
3-sided zipper
2 internal, 1 zippered lid
Laptop Sleeve
up to 15in
23 x 13.5 x 10in
Claimed Weight
2lb 13oz
Manufacturer Warranty

Overall Rating

4.5 based on 129 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 1 reviews
3 Stars - 6 reviews
4 Stars - 23 reviews
5 Stars - 99 reviews

What do you think about this product?


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5 out of 5 stars

June 7, 2023

Awesome EDC

I’ve had this for a couple weeks now. I scored and was able to get the last Shadow 1000d version from MR. It has replaced my GR 15L Bullet for daily carry, as it is larger and I’m really liking the 3 zip system. The quick access ouch on top is a big improvement over the GR as well. Overall, I highly recommend this pack and because this one is so awesome, I’m looking at other MR packs to add to my collection.

Marty D

Originally reviewed on

5 out of 5 stars

May 29, 2023

Great EDC

I purchased this bag for a everyday runaround type bag. Perfect size for a MacBook, a writing pad, and a water bottle in the main pouch. Top pocket is perfect for some pens, charging cables, batteries, etc. would definitely recommend as a small day pack.


Originally reviewed on

5 out of 5 stars

May 28, 2023

Great EDC bag for high security environments.

I bought this bag to replace my department issue bad. I wanted something more streamlined with less picks but carried well and had some compartmentalism but allowed for easy inspection at security checkpoints. The small mesh pockets allow for this. The tri-zip also allows for easy inspiration. Carries extremely well. Big enough for my work stuff, lunch, and water bottles yet not to big.

Security 6

Originally reviewed on

5 out of 5 stars

May 21, 2023

Great bag

I bought it about a month ago and it’s great for day to day use


Originally reviewed on

5 out of 5 stars

May 5, 2023

Love this bag!

I work in a large outdoor gear chain and see a lot of packs every day. This one stands out first for its simple style. There are times you need to carry things without looking like you just went hiking. The more I use it the more I appreciate its rugged construction like beefy zippers and pull tabs. The zipper design make it super simple to load and fast to covert to a stuff sack on the go. Straps are comfortable and the top exterior compartment holds surprisingly good size objects . If you are looking for a well made pack with decent capacity and looks good pick this one up.


Originally reviewed on

5 out of 5 stars

April 15, 2023

Perfect for my 4 day excursion

I took this back into the Guyana rain forest for a fishing trip. I liked the way the bag opened though pulling the center zipper had a small "hitch" where the three zippers cross. Very functional without any useless gizmos


Originally reviewed on

4 out of 5 stars

March 25, 2023

Perfect size for a trip to Italy

I recently purchased this pack and the first thing I did was open it up and fill it up with my everyday carry gear. It fit well without being jammed in there. One thing I noticed right away was the zipper stuck repeatedly in the same spot where the Y comes together. When I felt inside it seemed like the zipper pull was getting caught on extra material at the Y junction. After repeated opening and closing it did not improve. Bummer but not a deal breaker either.


Originally reviewed on

5 out of 5 stars

March 18, 2023

Versatile Small/Medium Bag

Have been using this mostly for airline travel and it packs everything I need pretty well. Interior sleeves easily pack a laptop and iPad, rest of my electronic gear, snacks, and spare clothing. I am not a huge fan of extra interior/exterior pockets on other bags, so the Urban Assault 21 has exactly what I need. I find other packs with huge amounts of pockets a waste of space and weight that seldom get used for their purpose, and only add unnecessary bulk. About the only thing I'd want extra on this pack is a pen sleeve on the inside, but not a deal breaker. 3-zip is convenient and easy to use. If I need access to the bottom of the bag, I have it easily with the vertical zipper without having to dig down into the bag. I initially bought this bag to commute on the motorcycle and carry my laptop and other gear and wanted the 18L version of the bag, but color options available were not great. The shorter bag is more convenient on a bike to allow clearance to the seat on the back of the bike, but the 21L version still works. Just hoping more color options are offered in the 18L version in the future. Overall, very happy with this bag and would recommend it. For reference, I have the 1000D version in gray which is very durable but haven't tested it in the wet. Blends in well and not overly tacti-cool.


Originally reviewed on

5 out of 5 stars

March 7, 2023

Perfect for daily use!

Purchased to use for college, fits my laptop, notebooks, water bottle and a sweatshirt pretty snugly. If you need a sturdy day bag, this is it.


Originally reviewed on

5 out of 5 stars

February 17, 2023

Super awesome pack

I've had it for about a month or so now and it has been the best backpack I've owned. But if I could add one thing to it. It would be an bottle holder on the side. Over all 10/10


Originally reviewed on