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Boreas Buttermilks Backpack - 55L, Internal Frame

Item #6855U
$99.99 Save 45% Compare at $185.00
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About Boreas Buttermilks Backpack - 55L, Internal Frame

Closeouts. Extraordinarily breathable, ultralight and spacious, the Boreas Buttermilks backpack has a removable frame sheet and a z-foam back panel with deep grooves that pump cool air across your back.


Specs about Boreas Buttermilks Backpack - 55L, Internal Frame

  • Pack material: 140 denier ripstop nylon impregnated with silicone, 420 denier nylon bottom
  • Frame type: Internal
  • Frame material: HDPE framesheet and aluminum stays
  • Hydration compatible: Yes
  • Pack loading: Top
  • Rain cover: Yes
  • Recommended use: Backpacking Weekend,Backpacking Multiday
  • Volume liters: 55
  • M:
  • Dimensions: 25x12x8"
  • Pack capacity: 3417
  • Weight: 3 lb.
  • Fits torsos: 18-20"
  • L:
  • Dimensions: 25x12x8"
  • Pack capacity: 3417
  • Weight: 3 lb.
  • Fits torsos: 20-22"
  • Made in China
  • Visit our Backpack Guide


Do you own this product? Write a review and help others with their buying decisions!

4.400000 5 Overall Rating: 4.4 Based on 10 reviews

Most Helpful 5-Star Review

Verified Buyer Reviewed by Jonathan from Oregon on Friday, May 23, 2014
I really like this backpack. It's sturdy, has a lot of pockets, and fits very comfortably. When I bought it, I wasn't sure how many pockets it had, just hoped it had spots to put extra things that I didn't want loose in the bag. Turns out, the whole front is a stretchy pocket to the top stripe, and ... Read More
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  • pack
    Verified Buyer Reviewed by Karen from Florida on Wednesday, January 31, 2018
    Have not yet used the pack but daughter has one exactly like it and loves it.
  • nice but ...
    Verified Buyer Reviewed by Senior hiker from Massachusetts on Thursday, November 30, 2017
    I wound up returning it. I like pockets on the side for water bottles and this has some but they are too high and too far back to be useable unless you stop and take the pack off. I liked the fact that it was a little longer than my current pack and the waist belt snugged up well so I could get the weight off of my shoulders. Since I didn't use it I'm not sure if the lack of pockets was going to be bothersome.
  • Nice bag!
    Verified Buyer Reviewed by Mark from NC on Wednesday, November 29, 2017
    Lifetime warranty from Boreas. What more could you ask for? Took one star away because Sierra continues to use UPS as their preferred courier and they are frequently slow and/or delay the scheduled delivery for no apparent reason. UPS sucks, Sierra!
  • Lightweight & comfortable
    Verified Buyer Reviewed by Jody S. from Louisville, KY on Monday, November 6, 2017
    I really like the streamlined construction of the pack and that there isn't a lot of extra pockets and zippers adding weight. Used the pack on a 2 day trip on a trail with very little water, for for 25 miles and 3500ft elevation gain. It was unseasonably warm and humid for early October and the z-foam back panel really does work well to vent air from your back. The small zippered pocket on the top front of the pack holds my essentials pouch keeping me fvrom having to get into the main compartment. The hipbelt pockets are a good size, holding a 5.5" android phone easily, with a folded map in the same pocket. The strap over the top is useful with the drawstring closure, but I would prefer a roll top buckle closure. I will probably modify that with my thread injector.
  • I Like It
    Verified Buyer Reviewed by Michael from Mountains from Oregon on Wednesday, October 18, 2017
    It's the right size for carrying a little extra gear in the colder months. It's easy to get to the bladder (not included). I has two, big waist strap pockets, one of which arrives with the pack cover inside it (included). I like the Portland color scheme. It still weighs only 3 lbs. And, the Closeout price was great!

Question & Answer

Questions about this product? Get answers from community and staff experts.

  • “This backpack comes up when I search for the "women's" backpacks but does not say anywhere specifically in the product description or title (unlike all the other search results) that it is geared towards a woman. I like this bag but I much prefer the "woman's" fit". Is this a unisex bag, a women's bag, or is it mid-filed? Thanks!”
    Asked by ACM from Pittsburgh on 6/12/2017 8:44:13 AM
    • If a bag is not gender specific it will come up in searches for both men's or women's packs.
      Answered on 6/14/2017 3:59:27 PM by Product Specialist from Sierra Trading Post

About Boreas

Named after the Greek god of the cold north wind, Boreas is a small, independent outdoor gear brand founded by Tae Kim in 2010 and headquartered in San Francisco’s Mission District. Developed, prototyped and field-tested by a close-knit design team, all Boreas backpacks, tents and accessories are made to offer a combination of lightweight performance, exceptional functionality, durability and minimalist aesthetics. In order to produce superior gear, Boreas refuses to rush the development process and carefully tests every aspect of each product, from tent pole architecture to zipper orientation to daisy chain placement. If you’re passionate about gear and spending time outdoors, Boreas is one brand you don’t want to miss.