Boundary Supply Errant Pack MK II X-Pac Review
"Lighter. Tougher. Refined."
The evolution of Boundary’s flagship Errant — 30% lighter than the original, all-X-Pac build, 17″ laptop protection, and the same wide clamshell opening.
More on the Boundary Supply Errant Pack MK II X-Pac
What I like
- I vastly prefer this update over the original Errant. A great commit-to-it kind of bag.
- The front flap closes with a strong magnet now, instead of the old clips. I leave the top open and just flap it shut.
- About 30% lighter than the original, in updated materials.
- Softer, more contoured straps with binding on the inside, kind of an edgeless vibe.
- Hidden back pocket now runs all the way across.
- The tech compartment goes all the way down and fits a notebook perfectly. Key leash clip inside.
- Burly perforated stretch mesh, ripstop liner, water-sealed YKK zips, paracord pulls.
- The half-zip main compartment flops right down for great visibility.
Watch for
- The shoe compartment is gone (I never used it).
- The Nywool lining from the original is gone. I loved it, but it added weight.
- Exterior bottle pockets are taut with a 36 oz bottle and take up some capacity.
- I'd take an even stronger flap magnet.
Specs
- 20L, 12 x 19 x 7 in, about 2.28 lb, fits up to a 17" laptop.
- U.S.-made X-Pac, PFAS-free.
Where I've covered it
- Updated! Boundary Supply Errant MkII Deep Dive at 0:00 (full review)
(Studio Neat sponsored this video)
Similar Highly Rated Products:

Peak Design Everyday Backpack
Tech looks. Epic innovation.Protection, material delight, and the side-door access this bag offers are really what define the Peak Design Everyday Backpack. The shell material is tough, weather-resistant, and has that really premium feel Peak Design is known for. Fk'n love the clip version (I used to be a fan of the zip, now i'm clippy).

Aer Work Day Pack
Slick + OrganizedThe Day Pack from Aer's Work Collection was instantly one of my favorite simple daily carry bags because it's minimal frame but high-functioning insides.

Aer Flight Pack
Sleek. Organized.A stylish looking compact everyday carry backpack with plenty of organization for daily carry.

Nomatic Travel Pack
Organized. SturdyThese Nomatic bags are chock full of pockets. There are 2 different bags here: the Travel Pack expands up to about 30L, perfect for short trips and minimal travel. The Backpack is 20-24L daily carry. Both are sleek, totally organized, and rocking the "jetpack" look.

Tom Bihn Synapse/Synik
Dad Bag Epic™One of the internet's most beloved backpacks due to its accessibility, organization, build quality and capacity. Dad-bag looks tho.

Arktype Dashpack Mark II Backpack
Sleek AF.One that I've gone to again and again. Super unique shape, both clean and utilitarian in style, but the way it's laid out makes it really satisfying to use day to day. Great access and organization without the bag ever feeling busy.