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Mystery Ranch
Full Moon 6.3L Lumbar Pack

4.722222222222222 out of 5 stars
36 Reviews
$24.72 - $49.00
Up to 45% off



Why We Like The Full Moon 6.3L Lumbar Pack

Whether you're setting out for a long day in the city or a rambling adventure on your favorite hiking trails, the Mystery Ranch Full Moon 6.3L Lumbar Pack will be there to keep your most important items close at hand. Sized perfectly to fit a packable shell, a few snacks, and whatever other items you deem necessary for the day's activities, this pack has a versatile design that lets it be used as both a lumbar pack and a cross-body shoulder bag. Meanwhile,dual compression straps on either side pull the load in close for easier carrying, and a zippered front pocket keeps smaller items easily accessible.


  • Versatile lumbar pack that can be carried at the waist or cross body
  • Durable nylon fabric withstands the wear of city and trail travels
  • Waist belt can easily transition to a shoulder strap when needed
  • 6L size is large enough to fit gloves, a rain shell, and other items
  • Zippered front keeps smaller essential items within easy reach
  • Compression straps on the side make it easy to manage heavy loads
  • Item #MYT003A
330D nylon
6.3L (384cu in)
top, zippered
[external] 1 zippered front, [internal] 1 zippered
dual straps
Shoulder Strap
convertible waist belt
Claimed Weight
Manufacturer Warranty

Overall Rating

4.5 based on 36 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 1 reviews
3 Stars - 0 reviews
4 Stars - 7 reviews
5 Stars - 28 reviews

Fits Slightly Large

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?


Selecting an option will reload the available reviews on the page
5 out of 5 stars

December 16, 2023

Perfect small pack!

Makes a perfect small diaper kit for my kiddos! Works so well, I had to get my wife one. Holds 5-8 pull ups, wipes, medicine and some snacks. Everything I need, nothing I don't. It's easy to overpack with kids, so smaller bag forces you to just take the essentials.


Originally reviewed on

4 out of 5 stars

December 4, 2023


this is good for extra storage for day trips or for a few items on a quick hike. I would not buy this if you are looking to use for concealed carry. The main large compartment is the only spot big enough for a decent size pistol. In my opinion, it should have a third zipper compartment behind the main compartment as it feels like too much room. but, otherwise the quality is good and the bag is comfortable as a hip pack.


Originally reviewed on

5 out of 5 stars

July 20, 2023

Great size. Perfect for Air Travel

Love the size and durability. Smaller zippered pockets great for organizing. Fit my power bank, cords, slim insulated hydroflask and iPad pro for carry on. As well as smaller items like airpods, etc. Can carry as hip or cross-body comfortably

Ryan L

Originally reviewed on

5 out of 5 stars

July 13, 2023

Solid bag

Size, quality, and color scheme are all top notch. Great purchase. Only thing I'd love to see is a slide stop included so it stays where you set the straps without aftermarket materials on it.


Originally reviewed on

4 out of 5 stars

April 16, 2023

Just the right size!

This pack is simple and just the right size. I’ve had other packs with lots of features and capacity but they all seemed to be to large or had special features like water bottles holders that I just didn’t use. You don’t have to use all the capacity of a large waist pack but then it just seems to sag down but you butt. This one is well made and just the right size and a minimum of specialized features.


Originally reviewed on

5 out of 5 stars

March 26, 2023

Awesome pack!

The pack is awesome. Wore it cross body through a 5 mile hike. Never once did I complain. Holds enough snacks for 6 people throughout the hike. Only critique would be more padding in the strap for those that wish to wear it cross body. Even as a hip belt, it could use padding. Maybe even lock strap adjusters where you lengthen and shorten the strap. Other than that, amazing. Would highly recommend.


Originally reviewed on

5 out of 5 stars

February 17, 2023

Just what I was looking for

It’s perfect for hiking and skiing, fits perfectly and securely around the waist

Bad Bob

Originally reviewed on

5 out of 5 stars

February 6, 2023

Rugged and Roomy

This is the most spacious fanny pack I've yet to find. It's well-constructed, has a few nice storage compartments, and wears comfortably slung over the shoulder. A solid purchase for travel, fishing, or just day-to-day activities.


Originally reviewed on

5 out of 5 stars

November 21, 2022

hip monkey vs full moon

I don't have the full moon but do have the hip monkey that I really dig. It looks like the two are so similar, why would I buy the fm when they are about the same with the hm being slightly larger? not quite under a fm spell


Originally reviewed on

4 out of 5 stars

August 15, 2022

Not so different in size than the Hip Monkey

I got a Hip Monkey and I love it, but it's a bit too big for most days. (I primarily use it for mountain biking.) Got this thinking it would be smaller... it is. But not by as much as I was expecting. The cinch straps on the side make it better for compressing the load down with does help the situation (something the HM is not as good at). And based on dimensions, I'm certain the Forager would be too small. Would be nice if MR made a hip pack in-between with a 1 1/2" buckle. The 2" buckle can be uncomfortable at times on a bike because of the way the body bends forward.


Originally reviewed on