1. TORSO FIT
- Standing upright, tilt your chin to your chest.
- Locate your C7 Vertabra—the large lump at the base of your neck.
- With flexible tape, measure down the length and natural curvature of your spine to your iliac crest/ the top of your hipbone.
- This measurement in inches is your torso length.
TIP: If you're between 2 sizes, order the smaller size. Still not sure? Contact us.
2. TORSO CHART
We've found most people in these height ranges fall into these torso/pack sizes. That being said, it is always best to measure your torso using the guide above.
If you have questions, or your torso size doesn’t seem to make sense for your height, please contact us.
3. HIPBELT FIT
Use the following method to determine your hipbelt inches, then head to Step 4 to see the hipbelt size you need.
Pant Waist Size + 2".
CURVY HIPS: Smallest part of your waist + 5".
STRAIGHT HIPS: Smallest part of your waist + 3".
Smallest Part of waist + 2".
4. HIPBELT SIZE CHART
Find the hipbelt measurement you calculated in Step 3 on the chart. That will be your hipbelt size.
TIP: If you are on the outer edge of a size, order the larger size. [ Ex: If you are 38", you will notice 38" is the last number of the Medium Hipbelt and the first number of the Large Hipbelt. You would want to order a Large.]
5. SHOULDER STRAPS
J-straps are the traditional straight straps. Best for: Lean or straight builds, kids, curved and narrow shoulders.
S-straps contour body curves. Best for: Women, athletic and bigger builds, square and wide shoulders.
TIP: If you have a short torso but a larger upper body, contact us for a slightly longer strap. If you are very large in the upper body you might need XL shoulder straps, again contact us.
BUILT FOR HOW YOU ADVENTURE.
FULLY CUSTOMIZE THE FABRIC, COLORS & FEATURES ON YOUR CIRCUIT.
MADE IN THE U.S.A.
FREE U.S. DELIVERY
TUNE-UPS & REPAIRS*
Lets’ face it, every mother has a favorite child – ours is the Circuit. Weighing in at just over two pounds, we don’t think there’s a pack out there that can compare to the load carrying capabilities, comfort, and durability of the Circuit pack. If you have your total pack weight down around 30 pounds and want to feel the freedom of traveling light, this is the pack for you. The Circuit has been the most popular pack on the Pacific Crest Trail for the past 3 years according to the Halfway Anywhere annual survey of PCT thru hikers.
The Circuit pack utilizes a 1.2 oz carbon fiber and Delrin suspension hoop in conjunction with a dense internal foam frame and a single aluminum stay to give you excellent back panel support, maximum load control, weight transfer, and pack rigidity without limiting your range of movement.
AT A GLANCE
CIRCUIT [WEIGHT BY SIZE | OZ]
* X-PAC CIRCUIT WEIGHTS WILL VARY +/- A FEW OUNCES DEPENDING ON FABRIC SELECTED.
VOLUME: 4,200 CU IN | 68 L
MAX LOAD: 35 LBS | 16 KG
- Internal Suspension Hoop
- Padded Backpanel
- Contoured Shoulder Straps
- Front Shock Cord
- Front Mesh Pocket
- Dual Hipbelt Pockets
- 400 Robic Adjustable Side Pockets
- Rolltop Closure
- Side/Top Compression Straps
- Ice Axe/Pole Retention Loops
- Sternum Strap
- ULA 400 Robic Bottom Panel
REC. MAX LOAD: SUB 35 LBS
REC. BASE WEIGHT: SUB 15 LBS
TOTAL VOLUME: 4,200 CU IN | 68 L
BREAKDOWN (CU IN):
- Main Body: 2,400
- Front Mesh Pocket: 400
- Left Side Pocket: 400
- Right Side Pocket: 400
- Extension Collar: 500
- Left Hipbelt Pocket: 100
- Right Hipbelt Pocket: 100
Q: WHAT IS A SUSPENSION HOOP?
A: The suspension hoop used in the Circuit is our minimal solution to transferring load between shoulder and hip. If you imagine an upside ‘U’ you get a sense of how the hoop is positioned and how it functions. The upper arch of the ‘U’ ties into the shoulder straps, while each leg of the ‘U’ ties into the hipbelt. These points of contact allow for a range of suspension flexibility while being rigid enough to support loads up to 35 lbs. In addition, because the suspension is located on the periphery of the pack body, and the back-panel is stiffened slightly with dual density foam, the result is a pack that can handle the load but does not dictate your body’s movements — but rather responds to how you move. Personally, when the loads are kept below 35 lbs, we find this pack to be the most comfortable in the ULA line-up.
Q: CAN A BEAR CANISTER FIT IN THE CIRCUIT?
A: Every bear canister on the market will fit into the Circuit vertically. Unfortunately bear canisters will not fit in the Circuit horizontally. Keep in mind it is best to pack something between the hard sided canister and the bottom of the pack.
Q: WHERE DO I STRAP MY SLEEPING PAD?
A: If you are using an inflatable pad, we recommended storing it in the interior of the pack to avoid punctures. A foam pad can easily be secured beneath the top compression strap that goes over the top of the pack or beneath the front shock cord compression. Although not necessary for optimum performance, positioning your sleeping pad into the interior of the Circuit (against the back-panel) is also a good solution.
Alternately, you can build your own pack and add Bottom Straps, or a top Y-strap to carry your pad externally.
Q: CAN A WATER BOTTLE FIT IN THE SIDE POCKETS?
A: Each side pocket can accommodate two 1-Liter ‘Big Slam’ style bottles. A Nalgene-style bottle will also fit, but in your quest to lighten up, that should have been replaced a long time ago! In general most people can reach back and retrieve a bottle, drink, and return the bottle to the pocket without removing the pack. The top of the side pockets are angled for easier access.
Q: HOW DOES THE TOP OF THE PACK STAY CLOSED?
A: The top of the pack closes like a dry bag (also known as a rolltop) very similar to what river runners use to create a water resistant seal for their gear bags. The back of the collar is slightly taller than the front. Once you are packed, the collar can be rolled down upon itself to effectively create a barrier to water penetration. Once rolled, each side of the collar can be buckled to the sides of the pack or the two yellow buckles on the top can also be fastened to each other.
As for access, once the collar is rolled and fastened shut, you would need to unbuckle the compression straps and unroll the collar to access the inside of the pack. However, the roll-top only needs to be rolled shut when the weather dictates. If the sky is dry, the collar can simply be folded forward. Vertical compression can still be achieved by buckling the collar to the sides of the pack.
ULA 400 ROBIC
…the toughest stuff ounce for ounce we’ve ever seen. Highly tear and abbrassion resistant, reinforced with a ripstop weave to increase tear strength and stitch holding capabilities. 100% Robic Nylon fabric with three-pass Teflon DWR and a three-pass PU Coating, making it highly water resistant.
…one of the most popular high-performance technical fabrics in the industry. Low stretch, abrasion resistant, and a high denier face fabric strike a near-perfect balance between weight and durability. These multi-layered laminated fabrics are waterproof to 200+ PSI.