• Ascensionist Pack 40L, Ink Black (INBK) DEFAULT-NEW-COLORS
  • Ascensionist Pack 40L, Sporty Orange (SPTO) DEFAULT-NEW-COLORS
  • Ascensionist Pack 40L, Light Gecko Green (LEK) DEFAULT-NEW-COLORS
  • Ascensionist Pack 40L,
  • Ascensionist Pack 40L,
  • Ascensionist Pack 40L,
  • Ascensionist Pack 40L,

Patagonia Ascensionist Pack 40L

$179.00 - $107.00
$179.00 - $107.00
48002 #48002
  • Ink Black
    $179.00 INBK
    Ink Black (INBK)
  • Sporty Orange
    $179.00 SPTO
    Sporty Orange (SPTO)
  • Light Gecko Green
    $179.00 LEK
    Light Gecko Green (LEK)
Ink Black (INBK)
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Ascensionist Pack 40L, Big Sur Blue (BSRB)
Ascensionist Pack 40L, Ink Black (INBK)
Ascensionist Pack 40L, Sporty Orange (SPTO)
Ascensionist Pack 40L, Light Gecko Green (LEK)
Ascensionist Pack 40L,
Ascensionist Pack 40L,
Ascensionist Pack 40L,
Ascensionist Pack 40L,
Additional Information

Whether you’re trying a route on the South Face of Denali or heading into the Karakoram, when conditions dictate a need for additional gear or an overnight kit, this backpack expands to handle the load.

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For moving fast in Patagonia, Alaska or the Karakoram, this function-driven pack carries the loads of a multiday ascent without interfering with efficient movement. It features an integrated, asymmetrical spindrift collar that opens wide and closes in a single motion for fast packing. The high-density, foam back panel gives the pack structure and helps to support heavy loads, but can be removed for lightweight pursuits. Ergonomic shoulder straps (with load lifters) match your torso’s contours for 24-hour comfort, and the padded hip belt is removable when you prefer a simple webbing belt. Four rows of exterior daisy chains provide lashing options for a rope, helmet or pad. Other details include compression straps to carry skis and cinch down loads, an asymmetric profile for elbow clearance and a zippered pocket on the lid for quick access to small essentials. Made from lightweight yet durable 5.5-oz 210-denier CORDURA® 86% nylon/14% polyester with a polyurethane coating.
  • Lightweight, bomber, tear- and abrasion-resistant CORDURA® nylon/polyester ripstop
  • Asymmetrical spindrift collar opens wide for easy packing; drawcord simultaneously cinches collar and closes lid for a secure seal
  • High-density, foam back panel gives pack structure and helps to support heavy loads, but can be removed for lightweight pursuits
  • Padded hipbelt can be removed to create a simple webbing belt
  • Daisy chains on front provide lashing options; compression straps on sides help manage different-sized loads; zippered pocket on lid offers easy access to small items
  • Available in two sizes: S/M and L/XL
  • 878 g (1 lb 15 oz)
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Size & Fit
Size Chart

5.5-oz 210-denier CORDURA® 86% nylon/14% polyester with a polyurethane coating

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Ascensionist Pack 40L is rated 4.2 out of 5 by 6.
Rated 5 out of 5 by from It all makes perfect sense The Ascensionist 40L is just the right size for fishing gear including waders and boots, lunch, and a rain jacket. The flap closure system is brilliant. The pack has plenty of room, is light and comfortable, and long enough for my longer-than-normal torso. Thanks again Patagonia for another innovative product!
Date published: 2017-09-11
Rated 3 out of 5 by from Nice pack, several annoying flaws This is a high quality, light-weight pack but it contains several minor and easily-avoided production flaws, which should have been caught with the most casual field testing, which detract from making this a really great product. The Good – the fabric is lightweight and seems bomber; the foam-reinforced bottom is sweet; the foam back panel and shoulder straps are nice and stiff, feel advanced/modern, and provide decent support (especially when compared to the garage-tech feel of several competing alpinist packs); the daisy chains and modern ax attachments are good; and the two pockets are much appreciated, as are the hydration system port and built-in side compression straps (boo to the competing packs that have “designed out” these nice-to-have features). The pack carries a load as well as can be expected for a light weight pack and is relatively comfortable up to about 35 lbs. The O.K - The unique snorkel-jacket-hood style top loading closing style takes a little getting used to. It is easier to load a rack into compared to a more typical extension collar and faster to close and open, but has a much smaller expansion capacity compared to a top loading pack with an extension collar and floating lid. If really maxing this pack out, the pack’s contents will essentially be open the elements. The removal pods on the hip belt are appreciated for heavy loads compared to just the completely unpadded 2-inch webbing belt. The Bad – The top lid is secured/compressed by a webbing strap that can be moved between a lower and higher webbing loop on the back of the pack. This strap is “secured” into this loop via a small metal bar. Under load on the trail this metal bar often pops out of this loop and the user experiences an annoying feeling as the pack abruptly “opens” and you need to stop to reattach. (This point was mentioned in a previous review). I fixed this by adding a loop of cord to girth hitch this strap (like on BD packs) but making the bar a few millimeters longer or the opening a few mms narrower would have eliminated this. (By comparison, this same bar attachment is used on the Patagonia Linked 16 pack for the sternum and is so secure it takes 20 minutes, 3 hands, pliers, and the precision of a surgeon to remove). Out of the box mod 1. Opening or closing the top collar is done by cinching the cord through a cam lock or loosening the cam lock by pulling on another cord which is the exact small color cord. So there is a mini rat’s nest of cords that the user has to look closely at to determine which cord to pull to do what. I replaced the opening cord with one of a different color to speed and simplify things. Out of the box mod 2. There is a tiny internal pocket inside the body of the pack (similar to Cilo gear packs) that would be great for stashing a phone or wallet out of the way except this pocket is way too small to hold even a tiny phone. Why go through the time and expense on adding a pocket if you can only hold lip balm in it? On the much smaller (but way more dialed and awesome) Linked 16 pack there is a similar pocket which is a much better, larger size. Having my gear repair shop replacing this with a larger internal pocket will probably be mod 3. I am 5’10” and 165 lbs and went with the L/XL size (I typically can use S/M packs or L/XL packs) which feels right to me in the length department (the S/M felt way too short). However, the padded portion of the shoulder straps feel much too small and don’t come as low under my pecs as they should for comfort, and there is barely 2” of webbing to spare on the shoulder straps. For a big, barrel-chested dude, the L/XL is going to feel like a child’s pack.
Date published: 2017-08-09
Rated 5 out of 5 by from Very versatile pack I love my new Ascensionist! It's super light, has great features without being over-designed, and is all around very versatile. I needed a pack that would be small enough for single day climbs but big enough for weekend adventures, and this pack is awesome for both. It was quite snug for a 3-day backcountry ski trip that also required ax, crampons, avy gear, and the rest of the essentials, but with a little creativity I was able to make it work. It would be too small for anything longer than a long weekend, but for 1-3 day climbs it's spot on. I'm a little envious of my friends who have the older 45L because a little extra volume goes a long way, but for a 40L this really is a perfect pack.
Date published: 2017-05-15
Rated 4 out of 5 by from Light and versatile After reading the reviews of the previous iteration of the Ascensionist, I was convinced that this could be a great pack for a 6 six day hut to hut ski trip I was planning. The one complaint I was concerned about was the tear and abrasion resistance when carrying skis, but with the updated fabric I was confident that this would be less of an issue. After a week of abuse in the Alps as well as a few more shorter excursions the pack has been excellent except for one irritating detail. First the pros. The fabric has indeed held up well to ski edges so no complaints there. Comparing to a smaller Ascensionist from a few years back, the fabric does seem a bit heavier, but much more durable. The size was adequate for six days of ski touring hut to hut, but can also be cinched down to be comfortable carrying much smaller loads as well. The daisy chains and compression straps work great for attaching skis, ice axes, and other items as necessary. Personally, I really like the opening to the main pack. It's different, but works well. The shoulder straps are thin but comfortable and work well with the belt and thin backplate even with a full pack and skis attached. One of my favorite details is the daisy chain and small internal pocket. These make it easy to get to small items on the inside. I through my multitool in the pocket with a couple energy bars, and hang my water bottles off the daisy chains to make them quickly accessible. All in all a light and versatile pack that will handle many different activities in the mountains or elsewhere. The only real negative, is that the straps/ladder locks don't have sufficient hold. This was a bit irritating initially, so on the shoulder straps I finally just tied knots to prevent them from slipping. This shouldn't be necessary though and I'm surprised Patagonia missed this. The ladder locks are sewn in so can't easily be replaced, but there are other ways to fix this. I still rate this pack highly, but knock off a star for this. I thought I might miss a dedicated shovel pocket and I see that Patagonia might be coming out with a winter version of this pack next season. However, this pack is probably more versatile without the added ski specific features. Conclusion. This pack worked great for multi day ski touring/mountaineering as well as a shorter day trips. As the snow melts I'm sure this will be my go to pack for climbing and hiking as well. This would probably also work great for lightweight backpacking. Fix the ladder locks and I'd rate this pack five star+.
Date published: 2017-05-05
Rated 3 out of 5 by from Great pack, strange strap system So I've owned 3 of these packs now, (1 every year now in the Rockies for the pst 3 years) this year I was super stoked with the new refinements made on the Ascentist. The ice axe holders are fantastic, the padding on the bad is burly yet light. Just the overall feel of the bag is great in the back country on missions or at the crag approach climbing. but why, with the middle MAIN strap that holds the whole bag together, is it so loose? The strap is only held into the bag by a small hole that the strap feeds through and is held by a small metal flange that is only a 1/4 inch wider then the hole. I've already had the bag open up twice by itself hiking, and to be honest if I lose the strap Itself because this awkward design, I most definitely will be returning the bag for a refund. I have been thinking of sewing it shut because I do really enjoy this bag. My girlfriend has the 30L and she thinks my strap was manufactured larger, and could be a defect. Anyway 3 stars from me! 4 stars if it didn't have the strap issue. Thanks Patagonia for being awesome
Date published: 2017-02-26
Rated 5 out of 5 by from Very light yet strong I bought this a week ago and I am suprised how much I can pack into it. Its very comfortable.
Date published: 2017-01-29
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