By Marcus Hale, Lead Pack Research Editor · Published September 14, 2026, 6:03 PM ET
Direct Answer
Yes, ULA Equipment backpacks are worth it for hikers who value semi-custom torso and hip-belt sizing, durable Robic nylon construction, and US-made cottage manufacturing over the convenience of buying a fixed-size pack off a retail shelf. The trade-offs are longer lead times and no in-person fitting before purchase.
In plain English
ULA is a small American company that makes light backpacks for long-distance hikers. Instead of one size fitting a range of people, you choose the length of the pack's back and the size of the hip belt separately, a bit like ordering shirt and trouser sizes on their own.
Its packs are lighter than most big-brand packs but sturdier than the very lightest ones. Inside is a simple frame made from a bent rod, foam and a single metal bar. That is enough support for a light or medium load, but not for a very heavy one.
The downside is that you usually order online without trying the pack on. So you need to measure your back and your hips carefully first. ULA also lets you choose between two strap shapes to suit your shoulders.
ULA Equipment backpacks are worth it for hikers who put a real premium on fit accuracy and durability, since the brand's two-part torso-and-hip-belt sizing system and Robic nylon construction solve problems that fixed-size, mass-market packs often can't.
What do you actually get for choosing ULA over a mainstream brand?
Choosing ULA typically means a more accurate fit — because frame size and hip belt size are selected independently rather than bundled into one fixed pack size — plus a nylon build known for holding up to the repeated abrasion of long-distance hiking. Models like the Circuit and Catalyst have built their reputation specifically on multi-month thru-hikes, where durability failures show up faster than on shorter trips.
What do you give up?
Buying from ULA means giving up the ability to try a pack on in person before purchase at most retail locations, and accepting a longer lead time than picking a pack off a shelf, since ULA operates as a smaller, direct-to-consumer manufacturer rather than a mass-retail brand. Fit still needs to be worked out from measurements rather than an in-store trial, which raises the importance of measuring torso length and hip circumference accurately before ordering.
Is ULA worth it compared to Zpacks?
That depends on priorities rather than one brand being objectively better: ULA's flat aluminum stay and heavier nylon generally favor stability and abrasion resistance, while Zpacks' curved Arc suspension and Dyneema Composite Fabric favor minimum weight and ventilation. Hikers who haven't yet minimized their base weight tend to get more practical value from ULA's more forgiving, structured build.
Who gets the most value from a ULA pack?
Hikers with fit problems from fixed-size mainstream packs, and long-distance hikers who put durability ahead of shaving every possible ounce, get the clearest value from ULA. Hikers wanting the lightest possible pack, or who need a same-day retail purchase before a trip, are often better served by a different option — either a more minimalist cottage brand or a mainstream retailer with in-person fitting.
Inside the Circuit and Ohm suspensions
ULA says the Circuit weighs 38.5 oz, holds 68 L and has a 35 lb maximum load. Its suspension combines a carbon fiber and Delrin hoop, a foam frame and a single aluminum stay, and it is made from Robic nylon with a PFAS-free water repellent. ULA says the Circuit has been the most popular Pacific Crest Trail pack for four years, citing the Halfway Anywhere survey.1 That is the brand's claim based on a hiker survey, not an independent durability test.
The lighter UltraGrid Ohm weighs 30.4 oz, holds 55 L and has a 30 lb maximum load, using a 1.2 oz carbon fiber and Delrin hoop, with UltraGrid fabric replacing Robic on the body and straps.2 So within ULA the choice mirrors the wider market: a few ounces saved costs 5 lb of rated load.
Two-part sizing in practice
ULA measures torso length from the C7 vertebra to where the iliac crest line meets the spine, and says the hip belt should rest on top of the hip bones.3 It sizes men's hip belts as pant waist plus 2 inches; for women, it adds 5 inches to the smallest waist measurement for curvier builds and 3 inches for straighter builds. It also says S-shaped straps suit standard or sloping shoulders and J-straps suit flat or square ones.
That is why careful measuring matters more with ULA than with a pack you can try in a store. Find C7 by tilting your head forward and feeling for the bump, and measure the belt where it will actually sit.
ULA versus Zpacks: getting the comparison right
This page contrasts ULA's nylon with Zpacks' Dyneema Composite Fabric. Zpacks does say most of its gear uses DCF,4 but its Arc Haul 62L is made from 4.85 oz per square yard Gridstop fabric with HDPE grid threads. Zpacks says the Arc Haul handles loads up to around 40 lb and that its patented Arc Frame creates an air gap between back and pack.5 So the realistic comparison is frame style and ventilation more than fabric.
Warranty and origins also differ. Zpacks offers a 2-year limited warranty against defects.6 ULA warrants its products to the original owner against defects, repairs accident and wear damage for a fee, and asks for warranty returns to be cleaned or a cleaning fee applies.7 ULA says it keeps 100% of manufacturing in the USA, and that founder Brian Frankle went from a 25 lb to a 12 lb base weight on his own PCT thru-hike.8
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