CIRCUIT

Rated 5.00 out of 5 based on 14 customer ratings
(14 customer reviews)

$235.00

WEIGHT: 41 OZ | 1,162 GM
VOLUME: 4,200 CU IN | 68 L
MAX LOAD: 35 LBS | 16 KG
SHIPS FREE TO U.S. ADDRESSES.

Lets face it, every mother has a favorite child – ours is the Circuit. Weighing in at less than 41 OZ, we don’t think there’s a pack out there that can compare to the load carrying capabilities, comfort, and durability of the Circuit.

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Lets’ face it, every mother has a favorite child – ours is the Circuit. Weighing in at less than 41 OZ, 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. The Circuit can be ordered with a 12″ to 18″ adjustable harness system that works great for kids. In fact, the youngest person ever to backpack all 2,660 miles of the Pacific Crest Trail was carrying a Kids Circuit!

Original Green, Black, Red, Orange and Purple Blaze packs are sewn with our 400 Robic Fabric, the toughest stuff ounce for ounce we’ve ever seen. The Multicam Camo pack is sewn with 500 Cordura Fabric. The Cordura is not quite as tear resistant and a little heavier than the Robic, adding an extra 2 oz to the total pack weight. Either way, this is one tough pack that will give you years of hiking bliss, even if you are a bit tough on your gear. This pack will take the abuse of a 2,600 mile hike and beg for more.

NEW! Now you can customize the color of your ULA pack! Select “Custom” under the “Pack Color” dropdown, and add your pack to the cart. Then go to our CUSTOM page, select the level of customization you want and use our pack customizer to customize the look of your pack! NOTE: Custom charges are not refundable and returned custom packs will be assessed a $35 restocking fee.

STANDARD CIRCUIT PACK FEATURES

Removable features are in bold.

  • 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
  • Bear Canister Capable
  • ULA  400 Robic
  • 400 Robic Bottom Panel
  • Hydration Sleeve (1.4 oz)
  • Internal Stash Pocket (1.1 oz)
  • Water Bottle Holsters (0.8 oz)
  • Handloops (0.8 oz)
  • Single Aluminum Stay (2.0 oz)

OPTIONAL FEATURES

TRAIL NAME EMBROIDERY (+ $15.00): Now you can have your trail name, or your real name, embroidered on your backpack! Not only is it a nice personal touch, but it’s a great way of identifying your pack no matter how or where you travel. Simply write your trail name, or your name, exactly as you want it to appear on your pack, in the text field above. Then, choose your thread color and font, and we’ll personalize your pack for you. Packs that have trail names embroidered on them are still returnable, minus a $35.00 fee. The cost of the trail name is not refundable.

PACK WEIGHT

TOTAL WEIGHT: 41 OZ – 43 OZ | 1,162 – 1,219 GM *
 
Listed weight is for a size medium torso with size medium hip belt. Our weights are as shipped including all the removable items. In the case of the Circuit, removable items total about 6 OZ.

NOTE: MultiCam Camo packs are made with 500 Cordura Fabric Which adds about 2 OZ to the pack weight.

CAPACITY

REC’D MAX LOAD: 35 LBS OR LESS
REC’D BASE WEIGHT: 15 LBS OR LESS 

“Base weight” refers to the total weight of all gear carried — including the weight of your ULA backpack. This weight also includes things like water bottles and food stuff sacks, but not the weight of water and food as this will vary during each trip. Knowing your base weight will help you determine which suspension system will best handle your load on the trail.

PACK VOLUME

TOTAL VOLUME: 4,200 CU IN | 68 L

Breakdown (Cu In):

Main Body: 2,400
Front Mesh Pocket: 400
Left Side Mesh Pocket: 400
Right Side Mesh Pocket: 400
Extension Collar: 500
Left Hipbelt Pocket: 100
Right Hipbelt Pocket: 100

MATERIALS

ULA 400 ROBIC

With the exception of the MultiCam Camo Circuit (See Below.) Circuit packs are sewn with our new ULA 210 Robic fabric, the toughest stuff ounce for ounce we’ve ever seen.

Colors Available: Original Green, Black, Orange, Red, Purple Blaze

CORDURA 500

**The Multicam Camo pack is sewn with 500 Cordura Fabric. The Cordura is not quite as tear resistant and a little heavier than the Robic, adding an extra 2 OZ to the total pack weight.

Colors Available: MultiCam Camo

HIPBELT SIZING MADE SIMPLE

 
MEN
For men, use the waist size of your pants and add 2 inches. The “HIPBELT SIZE” option above includes numbered measurements. The number you calculated (waist size + 2) will determine the size you need. If you are on the outer edge of a size, order the next size up! Example: If you wear a size 36 pant, add 2 to get 38. Since 38 is the last number of the Medium Hipbelt and the first number of the Large Hipbelt, you would want to order a Large.
 
WOMEN
For most women, measure the smallest part of your waist and add 5 inches. If you are straighter through the hips, add 3 inches instead of 5. The “HIPBELT SIZE” option above includes numbered measurements. The number you calculated (waist size + 5) will determine the size you need. If you are on the outer edge of a size, order the next size up! Example: If your waist size is 26, add 5 to get 31. You would need a Small hipbelt.
 

MEASURING YOUR TORSO LENGTH

 
Torso measurement is the best guide we have for proper pack fit, but it isn’t foolproof. Generally we find that if you are between sizes on the torso it’s best to go with the smaller size, if you are between sizes on the hipbelt it’s best to go with the larger size.

To accurately measure your torso length for a correct pack fit, grab a buddy and follow the steps below…

  • Standing upright, tilt your chin to your chest.
  • Locate the largest lump on the back of your neck. It should be located close to the base of your neck proper.
  • From this large bone, measure (with the flexible tape) down the length and natural curvature of your spine to the top of your waist band, the top of which is resting on the top your hipbone. This measurement in inches is your torso length.

 

PACK SIZE TORSO LENGTH HIKER’S HEIGHT
SMALL 15″ – 18″ UNDER 5’6″
MEDIUM 18″ – 21″ 5’6″ TO 6’0″
LARGE 21″ – 24″ 5’10’ TO 6’4″
X-LARGE 24″ + OVER 6’4″
KIDS ADJUSTABLE 12″ – 18″ KIDS

Have any questions or don’t quite fall in the normal range? Give us a call or send us an email!

CHOOSING A SHOULDER STRAP STYLE

 
J STRAPS
The J straps are the traditional straps, and work best on most men with average builds. If you are very large in the upper body you might need XL shoulder straps, give us a call for that. Many men with athletic builds, i.e. strong, square shoulders will find the S straps work better. Swimmers, climbers, weight lifters, surfers, triathletes, XC skiers, etc usually prefer the S straps.
 
S STRAPS
The S straps work best on almost all women and men with square shoulders and good posture. If you are a short torso, but with a larger upper body, give us a call, we may want to give you a slightly longer strap, there’s no charge for it, so don’t be shy, pick up the phone or send us an email.
 

ULA PACK FITTING VIDEO

   

Q: WHAT DOES RECOMMENDED BASE WEIGHT MEAN?

A: “Base weight” refers to the total weight of all gear carried — including the weight of your ULA backpack. This weight also includes things like water bottles and food stuff sacks, but not the weight of water and food as this will vary during each trip. Knowing your base weight will help you determine which suspension system will best handle your load on the trail.

Q: DO I NEED THE S-STRAP OR THE J-STRAP? WHAT’S THE DIFFERENCE?

A: The J straps are the traditional straps, and work best on most men with average builds. If you are very large in the upper body you might need XL shoulder straps, give us a call for that. Many men with athletic builds, i.e. strong, square shoulders will find the S straps work better. Swimmers, climbers, weight lifters,surfers, triathletes, XC skiers, etc usually prefer the S straps.
 
The S straps work best on almost all women and men with square shoulders and good posture. If you are a short torso, but with a larger upper body, give us a call, we may want to give you a slightly longer strap, there’s no charge for it, so don’t be shy, pick up the phone or send us an email.

Q: CAN A WATER BOTTLE FIT IN THE SIDE POCKETS? IF SO, CAN I REACH IT? HOW DO THEY CLOSE?

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, and adjust singlehandedly with a cord lock and internal bungee to open and close.

Q: CAN I FIT A BEAR CANISTER INTO THE CIRCUIT? CAN IT FIT HORIZONTALLY?

A:Every bear canister on the market will fit into the Circuit vertically. Unfortunately bear canisters will not fit 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, I 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.

Q: WHAT IS THE SUSPENSION HOOP? HOW DOES IT WORK?

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: HOW DOES THE TOP OF THE PACK STAY CLOSED? IS IT EASY TO ACCESS THE MAIN BODY OF THE PACK BAG?

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.

14 reviews for CIRCUIT

  1. Rated 5 out of 5

    Michael Smith

    Purchased a ULA Circuit last fall. I’ve used it on three different 3 day/2 night trips and one 7 day/6night trip. It is a great pack. Well made, comfortable, very adjustable, and you can remove features you don’t plan to use (bladder sleeve, key/wallet pouch, hand loops, etc). The side pockets are large with adjustable compression, and the hipbelt pockets are awsome… great capacity and easy to open and close. Thanks for a great lightweight pack that is made to last!

  2. Rated 5 out of 5

    Tim C (verified owner)

    Excellent pack. Waited to review until I had used a couple times, including at Isle Royale National Park. Rides extremely well, especially with 20-25 pounds total weight – moves with the body and keeps they weight close in so you’re very stable. Excellent assistance with fit and service from the ULA crew (required a send back to correct the size which was handled perfectly.

  3. Rated 5 out of 5

    Chris (verified owner)

    Just wanted to give a huge shout out to the wonderful people over at ULA Equipment. They did an outstanding job on the Circuit Pack. I ordered it needing it in a hurry for a backpacking trip in the Arkansas Mountains and they rushed it too me just in time for my trip. The Circuit pack has a ton of room enough for my 4 day trip. Thank You guys so much and thanks you Chris over there. Great Company and Outstanding Customer Service.

    Thanks

    Chris

  4. Rated 5 out of 5

    Cris Lewis

    What a fantastic pack! I packed 20 lbs into a 4-day trip into Henry Coe State Park, which has lots of elevation change. The pack is super comfortable, even during multiple ventures off trail and in steep off-trail moves. It felt like an extension of my body rather than a heavy, bulky packs. Very well made and designed. At 5’5, 120, the s fit very well. Also, the best part: no hip bruising or pain even after 4 days, which I always experienced on my old pack after 1 day! Can’t wait to take it out on longer trips. I too wish I could strap something to the bottom, but there is overall plenty of storage. Also great customer service from the Down Works store in Santa Cruz where I bought it. Thanks for a great pack!

  5. Rated 5 out of 5

    Caitlin “LL” Olson

    I took the ULA Circuit on my PCT hike, and I was thoroughly satisfied. My gear fit nicely (heavy on first few days in the Sierra though), I LOVED how big the hipbelt pockets were, and the water bottle holders on the front straps are a lifesaver for an inflexible person like myself. This is a great pack. Do yourself and get a ULA Circuit.

    I’ll also note that one of the ice axe/pole loop plastic parts shattered when I dropped my pack, and the ULA team quickly sent me a replacement part after I emailed their support. A+ customer service.

  6. Rated 5 out of 5

    James (verified owner)

    I recently purchased a couple ULA Circuit backpacks for my teenage boys (black, and woodland camo). I knew I needed something that’s durable and lightweight. After receiving the packs, we loaded them up with 20lb of gear. Thankfully the packs fit great, look good, and the material and construction feel like they’ll last for many years. The only negatives I could find would be nitpicks, such as wanting a smaller logo, or the pack not being able to stand on it’s own. What is a negative aspect to one person could be a positive to another. It’s great that many extra items can be removed (with the exception of the hip belt pockets). It’s amazing how long the Circuit has been around, largely unchanged.

  7. Rated 5 out of 5

    James (verified owner)

    I have a rather long torso (21.5), almost 5.11 in height, and weigh about 180 lb. had some trouble figuring out which size to go for. long story short, went with the medium at first, but had to replace with a large at the end. but it was all worth the hassle. i picked this pack specially to carry not only light load, but also able to handle 35+/-
    lb loads in case when i need it. couldn’t be happier! great pack and great customer service! will buy again! thank you chris!

  8. Rated 5 out of 5

    Patricia Gatewood-Adams

    I love my Circuit! As a tall and large woman, finding a pack that fits well and feels right is a particular challenge. The dual adjusting options on the hip belt made this the perfect pack for my odd size frame. The bonus…I can just get a new belt when I need a smaller size! I opted for the s-curve shoulder straps as well, which made it even better for me. The pack is a wonderfully simple design with the perfect number of bells and whistles to keep water handy, keep everything secure, and keep the packing sitting just right. I upgraded from a cheap starter pack to the Circuit, and I’m so glad I did! I hardly felt like I was wearing a pack, and was the envy of my hiking group. (They’re buying Circuits before our summer hike 🙂 ) Thanks ULA!

  9. Rated 5 out of 5

    Erin Miller

    I love my Circuit – it is comfortable, durable and light-weight. The customer service alone worth 5 stars!

  10. Rated 5 out of 5

    Jennifer Rolfe-Maloney

    Absolutely Perfect!

    After researching new packs for weeks and wanting something lighter than my current set up that will lay me on a Thru Hike without compromising the integrity of the pack or the comfort of my body, I decided to take the majority of people’s advice and tryt the Circuit. I was apprehensive at first buying online without trying it on and feeling it out firsthand, especially since the only pack I had ever found to fit properly was my Osprey Aura, everything else has been to large in the shoulders & Getting this today & loading up every ounce of gear I own felt so light and natural and actually fit well inside my Circuit. The fully adjustable straps, and load maximizes a perfect fit, especially for a taller/petite woman that was important. I also had asked for gear straps to be sewn in the bottom to allow me to maximize internal space, and the customer service I received was beyond exceptional. I will highly recommend to anyone that this pack stands a cut above the rest.

  11. Rated 5 out of 5

    David

    Unrivaled durability and comfort

    My ULA Circuit is an amazing piece of gear. It’s performed in freezing rain and snow along the spine of the Great Smoky Mountains, hundreds of miles along the Appalachian Trail, deep within Grand Canyon, and has allowed me to comfortably carry 4-6L of H20 when needed. Once while hiking the Appalachian Trail, I stopped to rest and put my pack on top of a large boulder. Little did I know there was a GIANT yellow jacket nest under it! A minute later I was running down the trail trying to escape a swarm bigger than any I had ever seen before. The pack was covered with bees. I grabbed a dead limb about 12ft long and managed to fish the pack off the rock and drag it about 30ft down the trail mesh side down. Not a scratch and the pack still looks new a few hundred miles later. I would not want to experience this with a Dyneema Cuben Fiber pack, and you never know what the trail is going to throw at you. Bombproof!

  12. Rated 5 out of 5

    Josh Bradshaw

    Ultralight yet bombproof

    This year on the PCT (2017) is a very difficult one because of the extreme snow conditions. Leaving Kennedy Meadows I had to carry crampons, an ice axe, a bear can, warm winter layers, and eleven days of food. I was able to fit all of this into my circuit, and carrying it was actually fairly comfortable.

    Two days into my Sierra snow trek I set my pack down and to my horror it slid off a cliff. The pack took a fall that would kill a person, and it cracked my bear cannister. The pack itself and all of the other gear inside it was unscathed, it survived the drop without even a single stitch tearing, and the stays were intact and unbent.

    I was humiliated to make such a dumb mistake, but the durability of my ULA pack was the reason I was able to carry on eight more days instead of having to bail.

  13. Rated 5 out of 5

    Daniel Phillips

    Comfort and convienience

    I couldn’t be happier with my new Circuit.The pack was very comfortable and adjustable right out of the box. The layout is perfect. The Circuit is well thought out. My initial impression during the first miles was that it didn’t require a break in. It fits great and feels much lighter than my old pack even when loaded with my usual 28 lbs. I was most impressed with the hip belt design. I can snug the upper of the four belt sections to angle the belt which keeps it on my hips. My old pack kept putting my upper glutes to sleep because it kept sliding down my waist. The belt pockets are fantastic. Easy to access and big! I really like the large pack pockets with the adjustable shock cord draw openings. Nothing falls out. The expanding pouch on the front will allow a ton of gear even after the main pack is as tight as a tick.
    Thanks ULA.
    “trackmaster”

  14. Rated 5 out of 5

    Mark Jose

    Almost perfect

    The fit is great and it carries a ton of stuff. Only a couple of critiques. Would like a larger waist buckle, a way to strap stuff to the bottom, and I don’t love the way the load lifters attatch to just fabric and nothing structurally.

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