We've designed this pack for big adventures so you can go long in terms of storage, comfort, and functionality. The Adventure Pack 20L features a zipper secured roll top and compression system which allow it to adjust from 15 to 21 liters, and make it versatile from short adventures to epic! Most notably is our load leveling system which stabilizes by compressing the pack vertically and horizontally. 

Front: The chest pockets fit plus sized phones and 600ml soft flasks. The two small pockets in front of the flask pockets are for gels/trash/etc and the two shoulder pockets are for your phone, chapstick, and nutrition. Purchase flask here: Soft Flask The elastic chest harness works wonderfully for ladies and just as well for guys. Sizing is versatile from very petite up to about a 52" chest.

Right side: Has a 9" long zippered opening for access to maps, jackets, headlamps. The pocket reaches across the pack which creates an interior baffle as well as a large pocket. 

Left Side: Features a large pocket which holds most any water bottle or flask, and the 1" bar tacked nylon on the back works great for holding trekking poles with our optional Trekking Pole upgrade. 

Bottom: Features a 20mm attachment system for sleeping pads and additional gear. 

Interior: The interior has 3 compartments. 1st is the bladder pocket which holds a 2L bladder (included) but can hold a 3L also. 2nd is the main cargo for bulky gear, and the third is for light jackets. 

Optional Trekking Pole Holders here. - If you want to buy after purchase. Otherwise select the one with trekking pole hardware. Note: The pack does not come with Trekking Poles and they are only shown for illustration purposes.

Video below on the 12L which is nearly identical, just missing the roll top and not as deep. 

Adventure Pack 12L illustration, a pack for running and riding hydration from Orange Mud on Vimeo.

Weight without bladder: 22oz / Dimensions: 10.5" wide x 15.5" tall rolled up, 25" unrolled. / Comes with a 2L bladder with lockout and quick disconnect. Made in: Vietnam

Sport focus: Trail and ultrarunning, Fastpacking, Adventure Racing, Hiking, Mountain Biking

Extra bladders here. Note: it comes with the 2L, but a 1L or 3L will fit in it too.  

Note: The Adventure Pack 20 Liter does not come with soft flasks. We do sell them on our site if you'd like to add them. 

average rating 4.9 out of 5
Based on 16 reviews
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100% of reviewers would recommend this product to a friend
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Rated 3 out of 5
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Rated 4 out of 5
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Rated 4 out of 5
16 Reviews
Rated 5 out of 5
Review posted

perfect for run commuting and long races

I purchased this when I decided to take up running specifically with the goal of running to work. Its just the right size when the top isn't expanded to hold my packable down coat for the trip home and anything else I need to bring with me and then option to expand the bag by unrolling the top is perfect for when I have a lot of things at work that need to come home with me. The front pockets are perfect for stashing water and snacks for days I do my long run on the way to work. I also used it for my first half marathon (Millinocket half) and had no issues with the bladder freezing up (temp in the teens and it took me nearly 3 hours) and was able to carry an extra layer (that thankfully I didn't need) and put my nanospike in it once I was off the Golden Road. Its a larger bag that most would probably use for a half but since I had trained for the half with my long runs on my way to work it made sense to race with it too. Every time someone asks about running pack/hydration vest etc I send them to Orange Mud!

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Rated 5 out of 5
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Adventure Pack

I love that it’s big enough to hold everything I need for mountain biking but it doesn’t cover my back jersey pockets so I can get to them easily.

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Rated 4 out of 5
Review posted

Great Pack so far..

Really like this pack for longer unsupported runs. I have two issues with the gear. First issue, I got the trekking pole hardware version (basically two bungee/plastic clip included) of the pack. I could not use them to secure two poles to one side of the pack because they would be too heavy and imbalance the pack and the cords are way to short to fit around both poles. Ok, so lets move one clip to each side. They fit around each pole fine enough, but now you have one secure point trying to hold a pole that is a foot and a half long. They basically flop everywhere. I ended up stuffing the ends into the outer pocket and securing the top of the pole which at least somewhat held them. After goofing around run after run, my solution is to come back and buy another set of trekking clips for $10. Long story short, for the cost of the pole upgrade, the pack should come standard with 4 clips to secure the poles at the top and bottom of the pack on the left and right.

The other minor deal is when running minus the bladder or anything in the back, it flops around quite a bit. There is a vertical cinching strap down the middle of the pack, but having another outer horizontal strap going across the middle of the pack could cinch it that much more so there would be no bounce or movement.

Other than those minor gripes, love the pack and all the other stuff from OM. Keep on innovating!

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Rated 5 out of 5
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Great Commuter Pack

I've been using this pack for the last several months on my 10 mile commute to work. Plenty of room for all of the essentials - change of clothes, shoes, and lunch. Great setup gives me easy access to phone and water.

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Rated 4 out of 5
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Perfect for my Rim to Rim to Rim adventure.

Ideal pack for travel and adventure. Had plenty of space for all my travel and adventure necessities. This was the only baggage I needed on the plane and during my 2 day adventure. Comfortable with

lots of room.

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