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Outpost Frame Bag

4.333333333333333 out of 5 stars
3 Reviews
$59.95 - $69.95



Outpost Frame Bag

Storing your gear for a bikepacking adventure is a key part of the trip. After all, you don't want to spend all day pedaling a poorly-packed bike only to reach camp for the night and realize you've forgotten something. Streamlined and intelligently designed, the Blackburn Outpost Frame Bag comes prepared to store ample gear so you can sit back and enjoy the ride scenery rather than worrying about where you tucked your end-of-the-day candy stash or spare tubes. The hydration port makes carrying water easy, and the bag comes with multiple straps to ensure a secure, stress-free fit.


  • Frame bag conveniently stores your bikepacking gear
  • Water-resistant fabric withstands the elements
  • Multiple sturdy straps for a secure attachment
  • Wealth of pockets, including bladder hydration port
  • Item #BLB003C
water-resistant synthetic
[small] 2L (122cu in), [medium] 4.3L (262cu in), [large] 5.25L (320cu in)
hydration port, main compartment, multiple internal
Number Included
adjustable hook-and-loop attachments fit most bikes
(open)[large] 20 x 11 in, [medium] 18 x 11 in, (closed)[large] 20 x 7 in, [medium] 18 x 7 in
Claimed Weight
[large] 14.2oz, [medium] 12.7oz
Manufacturer Warranty

Overall Rating

4.5 based on 3 ratings

Review Summary

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

March 4, 2021

Best bag for my bike

I've used it several times

Nevermind that it fits perfectly nestled in between my frame, it’s a great looking bag and functional for what I need. The color also is better than what’s shown on the website. Advice: if you choose to carry a bladder in it, check out the bladders made for a hip pack. They seem to fit better. My small bag fits a 1.5L. If anyone has discovered a better bladder and you can somehow comment on this review, please let me know!

user image
Nina M

Originally reviewed on

5 out of 5 stars

January 7, 2021

Much better than having weight on back

I've put it through the wringer

I used this for two multi-day rides. One on a road bike and one on a MTB. I removed the bottle cages and had the bag fully extended. Used a camel back for hydration. This pack won't fit all MTBs depending upon how the rear shock is configured. I got it to work on my Giant Anthem. On my 54cm road frame, it fit fine. I liked having the small outside pockets for things I needed quick access to. There are a lot of straps to be able to secure it to your bike but it is easier to take out the items you need each night than to remove all the straps. You can't overstuff too much or your knees will hit the sides but I was fine with it. Seems well constructed, still in good shape.


Originally reviewed on

3 out of 5 stars

May 15, 2020

Great bag, runs small

I've used it once or twice and have initial impressions
Size Bought:
5' 9"

Great frame bag. Solid build, but the sizing listed isn't the correct sizing. It is listed at 18" for the size med, but it comes in at 16.5". That last 1.5" would really add a lot more capacity. I love the ability to unzip the bag when you need more capacity. The only problem is that when the bag is really loaded up, the bag can bulge out a bit and cause some rub on your legs.

Pierre L