• Osprey Packs - Argon 70 Backpack - 4272-4638cu in - null
  • Osprey Packs - Argon 70 Backpack - 4272-4638cu in - null
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Osprey Packs Argon 70 Backpack - 4272-4638cu in

Temporarily Out Of Stock

Don't get too bummed. This item is on the way and will be available for purchase as soon as it rolls into the warehouse.

Can't wait? Consider one of the other Weekend Packs (3000-4500 cu in) we have in stock.

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Tech Specs

40D nylon, silicon coating
aluminum stays, HDPE frame sheet
Shoulder Straps:
Bioform harness
Sleeping Bag Compartment:
Hydration Compatible:
Reservoir Included:
Detachable Daypack:
Detachable Lid:
Ice Axe Loops:
Trekking Pole Loops:
Claimed Weight:
[M] 6 lb 1 oz, [L] 6 lb 6 oz, [XL] 6 lb 7 oz
33.5 x 14 x 13 in
[M] 4272 cu in, [L] 4455 cu in, [XL] 4638 cu in
Recommended Use:
Manufacturer Warranty:

Make comfort a priority. Hit the trail with the Osprey Argon 70 Backpack.

Osprey loaded the Argon 70 Backpack with every plush feature the company could think of, from an ultra-padded waist-belt to an integrated hydration system. Two aluminum stays and a molded back panel increase comfort when you load up every bit of the Argon 70 Backpack's 4500cu inch cargo space.

  • ReCurve suspension features an HDPE framesheet, two aluminum stays, and dual aluminum rods for the active transfer of weight to your hips
  • AirScape back panel features three different foam sections for plush comfort and an integrated air chimney for supreme ventilation
  • BioForm CM A/X hip-belt features thermo-moldable foam so you can dial in the perfect fit (for info on custom molding: www.ospreypacks.com/en/web/custom_molding)
  • Removable AquaSource hydration sleeve converts to a hydration pack for summit bids (water bladder not included)
  • Removable top lid converts to a lumbar pack for day-treks
  • Integrated load-lifter straps let you pull your load against your back for improved control and stability over uneven terrain
  • Interchangeable, dual-density shoulder straps easily adjust to fit both men's and women's frames
  • Top-loading access point makes packing easy, zippered side-access port lets you get to gear without having to unpack and repack everything
  • StraightJacket compression wings let you adjust the pack's volume for carrying different-sized loads
  • Osprey's recommended load range: 50 to 70 pounds
  • X-Large variant comes standard with size Large belt and harness

Mixed Feelings

    Just got back from my trip with this pack. Good amount of volume in this pack. I don't like that the pack only has one water bottle sleeve; you can't depend on there being any running (or standing) water in the creeks in Texas, so having another external pocket for an additional 1.5-2 liters would be ideal. I REALLY don't like the water bladder being inside the main compartment of the pack. I think it is a much better design having an external bladder sleeve like on the new 2013 Xenith and Aether models.

    That being said, the suspension system on this bag is amazing. I had 43 pounds in the pack the first day and it was comfortable. The BioForm CM padding on the hip belt and shoulder straps are significantly more substantial than the IsoForm models.

    All things considered I will definitely return this pack to get the new Xenith series from Osprey. The the Xenith 75 M weighs in at a full pound lighter, and has the two external water bottle pockets and the external water bladder sleeve. I do love the color though... wish they had Kelp Green on the new packs...

    Mixed Feelings

    Osprey Argon 70

      Performance as Expected

        Packed in for a 5 day winter camp. Loaded out with around 48 lbs. Very comfortable. You can pack more than you need and it's very comfortable.

        cool i will save up for it for sure that is nice this is were im going to get all my stuff


          NOTE: Bag is nowhere near filled to capacity!


          Osprey soaring above Shenandoah

            Osprey soaring above Shenandoah

            More of a comment.. haven't used my pack yet.

              Got it for $279 at moosejaw, haven't used it yet unfortunately, BUT just a word of advice. If you're considering the Kelp Green, thoroughly google search pics of the pack or find a brick and mortar place that has this one available to see in person, because the color in this picture may be misleading. It's still nice, but a little different that's all.

              The Cadillac of Backpacks

                Picked up this pack in July 2009 for a 5 day hike along the Berg Lake Trail in BC, Canada. I'm 5'9" and weigh in at 170 lbs; I had this pack loaded up with 50 lbs on day one, and it felt like a dream.
                IMO, the Argon has the best suspension of any pack on the market. If carrying heavy loads over long hikes is what you do, then this pack won't disappoint.

                Other features I loved:
                1. The removable lid and hydration sleeve were great for day hikes out of base.
                2. Lots of compression straps for tightening up your load
                3. The WARRANTY is hands down the best on the market; if you break it, Osprey will fix it, no matter what!

                1. Make no mistake, this is a heavy pack. If you're a fast and light, gram conscious hiker, this is NOT the pack for you.
                2. no pockets on the hit belt.

                All in all, this is the best expedition pack I have ever used, providing unmatched load bearing capability and comfort.
                As always, fit is key, so be sure to get measured up properly. Happy Backpacking!

                Osprey Argon 70

                  Osprey Argon 70