Arc Air ROBIC 60L Backpack

10 reviews
$325.00 Weight 22.3 oz / 632.0 g

Lead Time Ships in 1-3 days

I just finished a round trip thru hike of the Ozark Highlands Trail. I had no problem with the pack. I would reccomend it to anyone.

– Edgar B., ★★★★★

From those grueling east coast ascents to long water carries across the desert, the Arc Air is a durable pack designed to be the ultimate combination of simplicity and function.

Featuring custom Curved Carbon Fiber Air Stays, the Arc Air creates a gap between your back and the pack for airflow and cushioning.  The frame transfers weight to your hips, keeping the weight off of your shoulders and providing a comfortable fit.

The ROBIC® fabric is highly durable and provides added abrasion resistance.

Featuring adjustable shoulder straps, an interchangeable belt, and a variety of optional modular add-ons, the Arc Air is sure to become your pack of choice.

For a smaller volume pack, check out our Arc Air 50L.

  • Constructed from a mix of 3.7 oz/sqyd 100D and 5.8 oz/sqyd 210D ROBIC® Material.

  • Curved Carbon Fiber Air Stays combined with a Lycra back panel create a gap between your back and the pack. The air gap helps keep your back cool while also preventing items from rubbing against you while hiking.

  • The roll top closure keeps water out, and lets you roll down the top as your gear load shrinks.

  • The side compression straps allow you to stand tall items like trekking poles or an umbrella in the side pockets.

  • The pack material is waterproof and is constructed using hydrophobic thread, making the pack highly water resistant. We still suggest using dry bags for your important items like your sleeping bag.

  • Large stretchy Lycra mesh center pocket is great for quick access items. Mesh also lets you dry wet clothing and gives you a clear view of your gear.

  • Comfy 3/8" thick by 2.75" wide padded contoured shoulder straps and padded belt. Both the straps and the belt have a daisy chain for clipping on items, and an adjustable position sternum strap is also included. The belt and shoulder straps have 3D mesh on the underside. This gives them a little bit more cushion, and the belt also has more texture for better grip.

  • Side pockets are sized to fit 1 or 1.5 liter bottles. They are positioned low on the pack and slanted forward for easy access without removing the pack. The pockets have drainage holes at the bottom, and elastic that keeps them tight at the top.

  • A top strap, and base straps allow you to lash on extra items to the top or base of the pack. The straps come off if you don't need them.

  • The 60L pack size has enough space for 5-6 days of food and ultralight gear. The pack can be compressed down with the roll top closure straps for short trips or use the top strap and base straps to lash extra stuff to the outside for long carries.

  • All standard Bear Canisters, including the Bearikade Expedition and the BearVault 500 will fit in the upper half of this pack standing on end. There is enough extra girth to either wrap a foam pad around the canister (if you use one) or stand a medium stuff sack vertically beside the bear canister.

  • The short and medium size frames will fit into an airplane overhead bin with the top rolled down to the frame. The tall size frame may not fit unless you pop the vertical frame bars out of the pack.

  • The sides and front of the pack feature a variety of loops for attaching optional add-ons like our top side pockets, shock cord lashing, and ice axe loops.

  • Our torso height adjustment mechanism is is covered by US Patent No. 9,848,687

  • All Zpacks gear has a two year limited warranty against defects in materials or workmanship. Please see our return / warranty policy.

  • Made in the USA.
  • Our ultralight Curved Carbon Fiber Air Stays keeps the pack stiff so that most weight is carried on the hips instead of the shoulders. The frame pieces can be easily removed or replaced.

  • The frame is curved to allow air flow and keep your back cushioned from the pack's contents. The arch is about 2.5" (6 cm) deep.

  • The belt is attached directly to the bottom of the pack frame for the best load transfer.

  • The belt is removable and interchangeable. If you lose weight or need to share the pack between people, the belt can be swapped out. Watch the belt removal video.

  • The shoulder straps and load lifter straps are attached directly to the frame. Load lifters straps come standard on this pack.

  • The shoulder straps can move up or down to adjust the torso height to a perfect fit using our patented torso adjustment mechanism. It works like a conveyor belt. This is great for sharing the pack between people, for growing teenagers, or for resale.

  • The belt provides a full wrap around your back. No need for additional lumbar support.

  • The belt is done with "V-Style" webbing so that the top and bottom circumference can be adjusted independently. This helps wrap your hips much more securely and prevents the belt from sliding down.

  • Collectively, these features provide the additional load transfer necessary for loads up to around 35 lbs (16 kg).


Body dimensions: 8" x 12.5" x 29.25"  (20 cm x 31.8 cm x 74 cm)

Volume: 60L (47L main body, 2.5L each side pocket, 8L center pocket)

Frame Height: Short 17" (43 cm), Medium 20" (51 cm), Tall 23" (58 cm)

3.7 oz/sqyd 100D ROBIC®

ROBIC® nylon has very high tensile strength for its weight. The material features a fully waterproof polyurethane coating. The exterior is treated with a C6 durable water repellent. This material is used for the main body of the Arc Air.

Weight: 3.7 oz/sqyd (125 g/m²)

5.8 oz/sqyd 210D ROBIC®

We use this heavier weight of ROBIC® to add strength and durability in high wear areas. We use this material for the bottom, rear, and pockets of the Arc Air.

Weight: 5.8 oz/sqyd (197 g/m²)

5.0 oz/sqyd Lycra® Mesh

This mesh provides a superb 4-way stretch and is a great choice for exterior backpack pockets. It has a relatively light weight for mesh, while being difficult to tear. It can withstand getting caught on branches and other typical abrasion that backpacks are subjected to.  

 5.0 oz/sqyd (169.53 g/m²)

5.3 oz/sqyd 3D Spacer Mesh

This mesh has a three-dimensional structure which allows airflow and adds cushioning. It has a tricot backing so you can't see clear through the holes. We use it on the underside of our backpack's shoulder straps and belts to absorb sweat, add cushion, and add grip. Our 3D mesh weighs less than most other types.

 5.3 oz/sqyd (180 g/m²)

 About 3/32" (2.5 mm)

Torso Height:

To measure your torso height, you will need the help of a friend and a string or cloth tape measure.

Most hikers wear their belt near the top of their hips, however, it isn’t uncommon for hikers to position their belt higher or lower.

To ensure you lock in the perfect fit, we suggest putting a belt on over your clothes in the spot where you’d like to belt to ride. Start your measurement at the center of the belt where it meets your spine.

Lower your chin towards your chest.  This will cause the C7 vertebrae to protrude at the base of your neck. The C7 vertebrae will mark the top of your torso height measurement.

Using the string or cloth tape measure, follow the curve of your spine up from the center of your belt to your C7 vertebrae.  This measurement is your torso height.

Belt Size:

The padded portion of the belt is 1" shorter than the listed minimum adjustment. For example a "Medium (30-36 inches)" belt has padding which measures about 29" tip to tip, and has a minimum adjustment circumference of 30". It is the recommended size if your actual measurement is up to 36" however the webbing extends further.

To measure your belt size, pull a string or cloth tape measure tight around the spot you’d like your belt to ride. Choose a belt with a minimum adjustment of a couple inches smaller than your actual waist measurement. This will leave room for you to tighten down the belt if you lose a little weight on trail.

The belts on our Arc Series packs are also removable and interchangeable. This will give you the ability to switch the belt out if your waist size changes or if you order the incorrect size by mistake.

Customer Reviews
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United States United States

My cold weather pack

Concept great, size works for the extra cold weather gear, frame design still needs some improvements. So my husband and I both recently bought the arc air Robic 60L packs. We have taken them out on two, 10 day Sierra trips. I have the smaller DCF Arc blast as well. We both had the issue of the curved carbon frames swaying to one side when we stuffed our packs. However one of my husbands vertical carbon stay poked completely out of the sleeve it was inserted into. I believe it must be a flaw in the pack manufacturing as we only had the issue with that one side of his pack. After hiking out I contacted Zpacks and we returned it for repair (thankfully Zpacks has excellent custmomer service) my pack seemed fine in this regard the frame stayed in place, I just had to reshape (smoosh) my load often as it pushed on the curved carbon bars which displaces them sideways. Maybe if they were flat bar (rectangular) instead of square, then they wouldn’t be able to twist in the sleeve… just a thought. I think the concept is good just needs a little tweaking. I also miss the compression cord design of my Arc Blast. The website photos showed the Arc Air with the Arc Blast compression system, but the packs we received have the minimal compression system design of the smaller pack website photos. When we fill the pack it becomes a big shapeless blob which may contribute to the frame racking. I’m thinking side compression may help control the blobbynesss. I still like the pack as it’s light and there so much about it that works. Perhaps Packing Pods or cubes may help. I plan to try that next. Also, still currently waiting on my husbands pack repair to return…

United States United States

Fabulous Pack

I have about 1,000 miles on this pack including the 745 miles from Campo to Trail Pass on the PCT this spring and love everything about it. It took me a few miles to get the adjustment of the load lifters correct but, after that everything has been great. Even with a full resupply and enough water for 20 plus mile carries the pack fit well and felt great. No issues with sweat or water from rain inside the pack. A note about Zpacks customer service; I have one strap showing some where, obviously wear and not a defect. I wanted to buy a spare to have on hand. I offered to pay for the strap but Zpacks sent me a new one under warranty. For me this pack is perfect!

A Zpacks Customer
Brian M.
United States United States

New Favorite Pack

I just switch over to Zpacks Arc Air pack after about 8 years of another ultra-light brand. I only wish I would have done this sooner!! I absolutely loved the arc on this pack and how it kept my back from being drenched in sweat after big climbs in the Sierra. The hip belt having two adjustment straps really allows me to get a perfect bit and unloading pressure off my shoulders. I found that the pack carried the loads I had for 5 days, including a bear can very well. Definitely recommend this pack!

Eric L.
United States United States

Not waterproof

Absolutely LOVE the fit and function of the pack, but seriously disappointed with it's lack of being waterproof. I opened my pack after a long day of hiking and found moisture in the pack... from the sweat off my back. I literally soaked the pack with a normal amount of sweat. Buy the DCF version, not the ROBIC.

Eric L.
United States United States

Not waterproof

I loved so much about this pack. The fit and features are amazing. Unfortunately, on my first significant trip I found moisture inside the pack and determined my sweat was leaching through the pack and dampening the inside. It's one thing to wet out from hard rain, it's another thing for it to absorb sweat. VERY disappointed in the ROBIC material. Wish I had picked up the DCF version.