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 OHM.
MADE IN THE U.S.A.
FREE U.S. DELIVERY
TUNE-UPS & REPAIRS*
The ULA Ohm is a full-featured, active full-suspension, ultralight pack that offers exceptional load control, on-trail functionality, and full body compression. Combining a 1.2 oz carbon fiber/delrin active suspension hoop and near full body compression, the ULA Ohm maximizes load control, weight transfer, pack compression, and overall pack rigidity in an ultralight package.
The Ohm is the pack for the fast folks, the ones who travel light, but still take a prudent amount of gear to be safe and comfortable. This pack uses the same belt and shoulder strap system as our larger packs, so comfort and weight transfer are as good as it gets. Also, like our larger packs, the hip-belt can move up or down in its sleeve, allowing you to fine-tune the torso length. This pack comes standard with a roll-top closure.
The ULA Ohm is one tough pack that’s been built to last despite its minimal weight.
AT A GLANCE
OHM [WEIGHT BY SIZE | OZ]
VOLUME: 3,960 CU IN | 63 L
MAX LOAD: 30 LBS | 13.6 KG
The Ohm is the pack for the fast folks, the ones who travel light, but still take a prudent amount of gear to be safe and comfortable.
- Suspension Hoop
- Internal Pad Holster
- Contoured Padded Hipbelt
- Hipbelt Pockets
- Contoured Shoulder Straps
- ULA 400 Robic side Pockets w/ Elasticized Top
- Non-Stretch Compression Cordage
- Top Compression Straps
- Ice Axe/Pole Retention Loops
- Roll-top Extension Collar
- ULA 400 Robic
- Front Mesh Pocket
- Foam Pad (2.0 oz)
REC. MAX LOAD: SUB 30 LBS
REC. BASE WEIGHT: SUB 12 LBS
TOTAL VOLUME: 3,960 CU IN | 63 L
BREAKDOWN (CU IN):
- Main Body: 2,100
- Front Mesh Pocket: 500
- 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 Ohm is a minimal solution in helping you transfer 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 30 lbs. In addition, because the suspension is located to the periphery of the pack body, the backpanel is ‘soft.’ This results in a pack that can handle a load and does not dictate your body’s movements — but rather responds to how you move.
Q: WHAT EXACTLY IS THE VARIABLE COMPRESSION SYSTEM (VCS)?
A: The bane of many ultralight packs is the lack of adequate compression. They work great when they are fully loaded (and therefore relatively stable in terms of load control), but suffer when the total volume is not packed. The Variable Compression System on the Ohm allows the entire pack body to be compressed no matter the overall volume of gear you have. We use non-stretch cordage as it maximizes compression and is lighter, and our 2mm nickel grommets act as cordage guides to ensure a smooth pull and stability.
Q: HOW DO I USE MY SLEEPING PAD IN CONJUNCTION WITH THE OHM? WHAT PADS WORK BEST?
A: Just about any lightweight pad (foam or inflatable) can be used for additional support and padding inside the Ohm. Three quarters and full length pads that can be folded (as opposed to rolled) work the best. If you are using an inflatable mattress, deflate, then fold it into 1/3’s or 1/5’s before inserting. We also supply a ¼ inch piece of open cell foam with the pack that works very well for those of you not carrying a sleeping pad.
Q: CAN A WATER BOTTLE FIT IN THE SIDE POCKETS?
A: Personally, we prefer to carry a smaller 20 oz bottle in the Ohm. The shorter height is more secure in the ~6″ tall pocket, and is easier to reach than a taller 32 oz bottle. 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 are keep under tension with non-adjustable 1/2″ elastic.
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.
Colors: Original Green, Black, Royal Blue, Teal, Purple
…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.
Colors: See “Build Your Own.”