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ULTRA Circuit S.V.
What Size Pack Do I Need? View Size Chart.
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're between sizes and you are getting a FRAMED pack, we recommend you size DOWN!
If you're between sizes and you are getting a FRAMELESS pack, we recommend you size UP!
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.
MEN
Pant Waist Size + 2".
WOMEN
CURVY HIPS: Smallest part of your waist + 5".
STRAIGHT HIPS: Smallest part of your waist + 3".
KIDS
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
The downward slope of your shoulder profile usually determines strap preference. You can assess your shoulder slope profile by looking in a mirror or having a friend look at the angle of your shoulder from the base of your neck to your shoulder point.
If there is relatively little or no downward slope, you have what is referred to as flat or squared shoulders.
If there is a noticeable downward slope, you have what is referred to as standard or sloping shoulders.
J STRAPS
J-straps are the traditional straight straps. They are best suited for people with flat or square shoulders, as their flat shape provides better surface contact and less rub.
S STRAPS
S-straps contour body curves. They are best suited for people with standard or sloping shoulders, as their contoured shape better hugs your shoulder slope.
TIP: If you have a short torso but a larger upper body, you may need a slightly longer strap. If you are very large in the upper body, you might need XL shoulder straps. Contact us, and we would be happy to make these customizations so your pack is comfortable and fits well.
$379.99
MADE IN THE U.S.A.
FREE U.S. DELIVERY OVER $25
LIFETIME WARRANTY*
TUNE-UPS & REPAIRS*
DESCRIPTION
You've asked, and we’ve delivered! The Ultra Circuit S.V. (Small Volume), is identical to our award winning Ultra Circuit backpack, but with a sleeker smaller volume. This super lightweight and reliable workhorse is backed by a lifetime guarantee. Designed for hikers who crave a sleeker profile without compromising performance, this pack is for those who find their current pack a little too roomy. The Ultra Circuit S.V. is perfect for 3-5 nights out for those with their gear dialed in. Or, if you need a little extra storage, the removable Top-Y and Bottom strap-system can help customize your on-trail experience.
Why Ultra? 15x stronger than steel by weight, twice as abrasion resistant as standard 420D nylon, and waterproof to 200 psi, we've finally found an ultralight fabric that matches our high standards. Front pocket is ULTRA StretchMesh for added abrasion resistance. Note that to maximize water-resistance of the ULTRA Circuit, these packs do not have bladder hose ports.
Hikers everywhere agree; Whether you’re a weekend warrior, L.A.S.H.er, or thru-hiker, the Ultra Circuit S.V. will keep you moving freely. It's the perfect balance of rugged durability, weight capacity, and weight savings in a comfortable long-hauler. The Ultra Circuit S.V. is a top choice for hiking any long-distance backpacking trail like the Pacific Crest Trail, Continental Divide Trail, Appalachian Trail and beyond.
Ready to take your adventures to the next level? The Ultra Circuit S.V. is here to be your trail companion. Explore lighter, hike farther, and embrace the journey!
MATERIAL: Challenge ULTRA™
COLOR(S): Grey
AT A GLANCE
WEIGHT: 35.8 OZ | 1,015 GM
VOLUME: 2,929 CU IN | 48 L
MAX LOAD: 35 LBS | 15.9 KG
The Ultra Circuit S.V. (Small Volume), is designed for hikers who crave a sleeker profile without compromising performance. The Ultra Circuit S.V. is perfect for 3-5 nights out for those with their gear dialed in.
FEATURES
- Framing System comfortable for up to 35 lbs
- ULTRA 400X + ULTRA 200X Fabric
- Ice Axe + Trekking Pole Loops
- Fits BV500 vertically inside
- Height Adjustable Torso
- Interchangeable Hip-belt
- Load-lifters
- Larger Hip-belt pockets than most of the industry
- Padded back panel
- Contoured shoulder straps available in two styles to cater to all body types
- UltraStretch Mesh
- Standard Top Strap
- Internal Suspension Hoop
- Padded Backpanel
- Contoured Shoulder Straps
- Front Shock Cord
- Rolltop Closure
- Side Compression Straps
CAPACITY
REC. MAX LOAD: SUB 35 LBS
PACK VOLUME
TOTAL VOLUME: 2,929 CI | 48 L
BREAKDOWN:
- MAIN BODY: 2,258 CI | 37 L
- FRONT MESH POCKET: 214 CI | 3.5 L
- LEFT SIDE POCKET: 214 CI | 4 L
- RIGHT SIDE POCKET: 214 CI | 4 L
- LEFT HIPBELT POCKET: 91.5 CI | 1.5 L
- RIGHT HIPBELT POCKET: 91.5 CI | 1.5 L
FAQ’S
Q: WHY ULTRA™?
A: ULTRA is 15x stronger than steel by weight, twice as abrasion resistant as standard 420D nylon, and waterproof to 200 psi. Ultra is the ultimate in ultralight fabric, with the strength to go the distance in the harshest environments.
ULTRA fabric lasts longer, absorbs 80% less moisture, and has better UV resistance and color retention than traditional laminated nylon.
ULTRA is the only durable, waterproof pack fabric made from 100% recycled polyester! Every yard contains over 20 plastic bottles and saves over one pound of carbon emissions compared to standard pack fabric.
Q: WHAT IS UltraStretch™ MESH?
A: UltraStretch™ Mesh is built for maximum abrasion and cut resistance. A technical fabric, UltraStretch™ Mesh is a 4-way stretch mesh woven with the highest quality fibers for performance and longevity.
Q: WHAT IS A SUSPENSION HOOP?
A: The suspension hoop used in the Circuit S.V. 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 S.V.?
A: Yes, bear canisters will fit into the Circuit S.V. vertically. Smaller bear canisters may fit in the Circuit S.V. 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: A foam pad can easily be secured to the top of the pack by adding a Top Y-strap Kit to your order, to the bottom of the pack by adding a Bottom Strap Kit, or get Both and keep your options open!
If you’re using an inflatable pad, we recommend storing it in the pack’s interior to avoid punctures.
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.
TECHNICAL FABRICS
ULTRA™ 200X
ULTRA 200X is constructed with a 200d face Ultra-PE blended with high-tenacity polyester, an Ultra-PE CrossPly, and a 0.75 mil film backing. Weight: 3.9oz/yd² Tear Strength: Warp: 103.1 lb / Fill 133.2 lb. Abrasion Resistance: 4,400 cycles.
ULTRA™ 400X
A high modulus pack fabric, ULTRA 400, is constructed of a 400d Ultra PE blended with hight-tenancy polyester, Ultra-PE Cross-Ply, and a 0.75 mil film backing. It is 20% lighter and four times as abrasion-resistant than other 400d U-PE fabrics. Weight: 5.25 oz/yd², 178 gsm. Tear Strength: Warp: 187.7 lb/ Fill 161.1 lb. Abrasion Resistance: 8,800 cycles.
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