Patagonia Ascensionist 35L Fire Red
Comfortable, streamlined, and lightweight climbing packPatagonia designed the Ascensionist 35L pack so you can comfortably carry your gear from the approach trail through the crux headwall without interfering with your ability to climb freely and efficiently. They worked directly in the field with their team of climbing ambassadors to create the Ascensionists lean, dynamic shape, which carries loads close to your core for climbing precision and support. The clean, stay-out-of-the-way design starts with lightweight yet durable 100% recycled nylon ripstop fabric with a 100% recycled polyester lining, a polyurethane coating and a DWR (durable water repellent) finish for durability and weather protection. A removable foam framesheet provides stability for shifting loads and protection from hastily packed gear; it moves and flexes with your body to preserve your natural climbing motion. The long spindrift collar has a dual closure to allow the pack to expand or collapse depending upon the load youre carrying. The Ascensionists exterior has an adjustable ice-axe carrying system that keeps the sharp tips of your tools covered, a top zip-closing stash pocket for easy access to small items, and removable compression straps for gear stability and quick options when you need to stow additional equipment. Inside, a handy hanging pocket keeps your easily misplaced items right where you need them. Other features include a three-point, over-the-top rope-carrying system, a burly haul loop, an adjustable sternum strap to accommodate layering and removable hipbelt pads to lighten your load for the summit push.
Comfortable, streamlined, and lightweight climbing packPatagonia designed the Ascensionist 35L pack so you can comfortably carry your gear from the approach trail through the crux headwall without interfering with your ability to climb freely and efficiently. They worked directly in the field with their team of climbing ambassadors to create the Ascensionists lean, dynamic shape, which carries loads close to your core for climbing precision and support. The clean, stay-out-of-the-way design starts with lightweight yet durable 100% recycled nylon ripstop fabric with a 100% recycled polyester lining, a polyurethane coating and a DWR (durable water repellent) finish for durability and weather protection. A removable foam framesheet provides stability for shifting loads and protection from hastily packed gear; it moves and flexes with your body to preserve your natural climbing motion. The long spindrift collar has a dual closure to allow the pack to expand or collapse depending upon the load youre carrying. The Ascensionists exterior has an adjustable ice-axe carrying system that keeps the sharp tips of your tools covered, a top zip-closing stash pocket for easy access to small items, and removable compression straps for gear stability and quick options when you need to stow additional equipment. Inside, a handy hanging pocket keeps your easily misplaced items right where you need them. Other features include a three-point, over-the-top rope-carrying system, a burly haul loop, an adjustable sternum strap to accommodate layering and removable hipbelt pads to lighten your load for the summit push.
Comfortable, streamlined, and lightweight climbing packPatagonia designed the Ascensionist 35L pack so you can comfortably carry your gear from the approach trail through the crux headwall without interfering with your ability to climb freely and efficiently. They worked directly in the field with their team of climbing ambassadors to create the Ascensionists lean, dynamic shape, which carries loads close to your core for climbing precision and support. The clean, stay-out-of-the-way design starts with lightweight yet durable 100% recycled nylon ripstop fabric with a 100% recycled polyester lining, a polyurethane coating and a DWR (durable water repellent) finish for durability and weather protection. A removable foam framesheet provides stability for shifting loads and protection from hastily packed gear; it moves and flexes with your body to preserve your natural climbing motion. The long spindrift collar has a dual closure to allow the pack to expand or collapse depending upon the load youre carrying. The Ascensionists exterior has an adjustable ice-axe carrying system that keeps the sharp tips of your tools covered, a top zip-closing stash pocket for easy access to small items, and removable compression straps for gear stability and quick options when you need to stow additional equipment. Inside, a handy hanging pocket keeps your easily misplaced items right where you need them. Other features include a three-point, over-the-top rope-carrying system, a burly haul loop, an adjustable sternum strap to accommodate layering and removable hipbelt pads to lighten your load for the summit push.
Comfortable, streamlined, and lightweight climbing packPatagonia designed the Ascensionist 35L pack so you can comfortably carry your gear from the approach trail through the crux headwall without interfering with your ability to climb freely and efficiently. They worked directly in the field with their team of climbing ambassadors to create the Ascensionists lean, dynamic shape, which carries loads close to your core for climbing precision and support. The clean, stay-out-of-the-way design starts with lightweight yet durable 100% recycled nylon ripstop fabric with a 100% recycled polyester lining, a polyurethane coating and a DWR (durable water repellent) finish for durability and weather protection. A removable foam framesheet provides stability for shifting loads and protection from hastily packed gear; it moves and flexes with your body to preserve your natural climbing motion. The long spindrift collar has a dual closure to allow the pack to expand or collapse depending upon the load youre carrying. The Ascensionists exterior has an adjustable ice-axe carrying system that keeps the sharp tips of your tools covered, a top zip-closing stash pocket for easy access to small items, and removable compression straps for gear stability and quick options when you need to stow additional equipment. Inside, a handy hanging pocket keeps your easily misplaced items right where you need them. Other features include a three-point, over-the-top rope-carrying system, a burly haul loop, an adjustable sternum strap to accommodate layering and removable hipbelt pads to lighten your load for the summit push.
in 3 offers
The lowest price for Patagonia Ascensionist 35L Fire Red right now is $205.40 at Oliunìd, compared across 3 retailers.
The all-time low was $142.80 on 27 June 2024 — today's price is 44% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 2 Nov 2026.
Last updated at 02/11/2026 18:06:23
Patagonia Ascensionist Pack 35 l climbing and mountaineering backpack - Fire Red - L-XL
Delivery by 11 Nov $95.73
Patagonia Ascensionist Pack 35 l climbing and mountaineering backpack - Fire Red - L-XL
Delivery $70.10
Patagonia Ascensionist Pack 35 l climbing and mountaineering backpack - Fire Red - L-XL
Delivery $70.10
originally posted on patagonia.com
This was my second one. First one went missing somehow. Fits everything perfectly! Rope, helmet, food, shoes, rack, H20, etc.... Chest, shoulder, and waist straps are highly adjustable and ensures a perfect fit. Feels natural on the back. Super tough material great for resisting abrasion.
originally posted on patagonia.com
The pack does the job quite well, great material, plenty of attachments, lots of extra straps and a simple top load makes this a great summit pack. I'm 6'0 but have a longer torso so went with the L/XL. The padding is solid and I love the ability to move the hip supports along the belt strap so you can get to pockets or just make general adjustments for comfort.
originally posted on patagonia.com
What I like most about this pack is that it’s super versatile. It’s designed and marketed as a climbing pack, but I’ve used it extensively for hiking, ski touring, and glacier travel and it’s suited all my day trip needs really well. It can carry skis pretty well, the material holds up to long trips and abuse, and the DWR is excellent. The only feature that I feel is lacking on the 35L version is a removable brain pouch!
| Capacity | 35 L |
| Depth | 9.5 in (Small) |
| Height | 24 in (Large) |
| Width | 11 in (Small) |
| Weight | 771 g |
Patagonia Ascensionist Pack 35 l climbing and mountaineering backpack - Fire Red - L-XL
Delivery by 11 Nov $95.73
Patagonia Ascensionist Pack 35 l climbing and mountaineering backpack - Fire Red - L-XL
Delivery $70.10
Patagonia Ascensionist Pack 35 l climbing and mountaineering backpack - Fire Red - L-XL
Delivery $70.10
This was my second one. First one went missing somehow. Fits everything perfectly! Rope, helmet, food, shoes, rack, H20, etc.... Chest, shoulder, and waist straps are highly adjustable and ensures a perfect fit. Feels natural on the back. Super tough material great for resisting abrasion.
The pack does the job quite well, great material, plenty of attachments, lots of extra straps and a simple top load makes this a great summit pack. I'm 6'0 but have a longer torso so went with the L/XL. The padding is solid and I love the ability to move the hip supports along the belt strap so you can get to pockets or just make general adjustments for comfort.
What I like most about this pack is that it’s super versatile. It’s designed and marketed as a climbing pack, but I’ve used it extensively for hiking, ski touring, and glacier travel and it’s suited all my day trip needs really well. It can carry skis pretty well, the material holds up to long trips and abuse, and the DWR is excellent. The only feature that I feel is lacking on the 35L version is a removable brain pouch!
I give this 1 star as I would every single pack Patagonia offers because there isn't an option for a smaller torso length size. As a rock climbing woman with a torso length of 15", it is nearly impossible to find a technical pack that fits me properly. All of Patagonia size small packs start at 16". I tried this pack in hopes that it might work out but it was quite uncomfortable and I won't use it again. I have been climbing for over 2 decades and with all the advances in gear options for women (mostly with apparel, and even there I find a lot of discrepancies in the women's versions or complete lack of product in the more technical options) pack sizing it lightyears behind. I love the Patagonia mission for sustainability and buy the products because of that. I am ... MoreI give this 1 star as I would every single pack Patagonia offers because there isn't an option for a smaller torso length size. As a rock climbing woman with a torso length of 15", it is nearly impossible to find a technical pack that fits me properly. All of Patagonia size small packs start at 16". I tried this pack in hopes that it might work out but it was quite uncomfortable and I won't use it again. I have been climbing for over 2 decades and with all the advances in gear options for women (mostly with apparel, and even there I find a lot of discrepancies in the women's versions or complete lack of product in the more technical options) pack sizing it lightyears behind. I love the Patagonia mission for sustainability and buy the products because of that. I am sad that there is no option for me and other shorter climbers out there. Please change this.Aside the fit issue, I found the strap that closes the top that adjusts with the collar extension to be quite a nuisance when compressing things down to its smallest capacity for a summit. It can be removed but its a pain in the butt to do especially with cold hands and would be near impossible to accomplish with large gloves imho. I did love having the external zipper pocket for quick items that come off and on often in a climb as well as quick snack access.
I use this pack anytime I'm bringing a rope with meeither in the mountains or just a day at the crag with the family. I can fit everything I need for a couple nights in the mountains, or can haul several harnesses, rock gear, and a rope for a day out with the family. The top closure system makes it really quick to access and, when minimally packed, the top can be rolled down into a compact size that is easy to maneuver around. The rope retention system is great, and the ability to take the soft, inner frame out makes it very comfortable to climb in.
Great pack for its intended use. Carries weight surprisingly well and is nice to climb with. It is well built but light, and overstuffs quite a bit. My only complaint would be the rope attachment system at the top. It's a little odd, and something I assume will be changed.It seems like this pack was designed to fit in between the ultralight hyperlite stuff and the "bells and whistles" osprey bags. Which I think it does well, light but with enough feature and durability to make it worth the price.
I have an earlier version of this pack (2015), but the styling is similar. This has been my go to pack for cragging/ski mountaineering/airport travel, and it does everything while staying simple enough to not annoy you. It carry's skis + boots+ + ice tools + heavy loads well, is light enough that I've taken it on some light and fast, 30+ mile days, carries a big enough load for an overnight trip, and stows well in an airplanes overhead compartment.I agree with the other review that it's rope carry feature isn't its strength, but this can normally be fixed with a neater coil, or by putting the rope inside the pack.
Great pack for both long approaches with a lot of hiking and a short approach to cragging day. Easily loaded and unloaded, carries weight super well.Fits a double rack, 2 ropes and clothing easily, rope grab strap on the top of the bag works well and is super adjustable.All sections of the pack are removable to reduce weight and unnecessary bulk.10/10 best pack I've owned
I got one of these after a few people who had the old version recommended it. I never tried the old one, but a few things I noticed with this one before I returned it. I took it for a three day climb in the mountains, 3 or 4 days of cragging, a few hikes, and one time on an overnight work trip.Minorly, I thought the fit was a little weird. I'm a pretty standard size, a little over 6' with normal sized shoulders and such. I felt that the shoulder straps were positioned a little on the narrow side, sorta always cutting into the sides of my neck, even with the sternum strap pretty loose. I also felt like the hip belt was a little too high on my hips, though I understand this is desirable for when you are wearing it with a harness. I wore this bag with a harness for a ... MoreI got one of these after a few people who had the old version recommended it. I never tried the old one, but a few things I noticed with this one before I returned it. I took it for a three day climb in the mountains, 3 or 4 days of cragging, a few hikes, and one time on an overnight work trip.Minorly, I thought the fit was a little weird. I'm a pretty standard size, a little over 6' with normal sized shoulders and such. I felt that the shoulder straps were positioned a little on the narrow side, sorta always cutting into the sides of my neck, even with the sternum strap pretty loose. I also felt like the hip belt was a little too high on my hips, though I understand this is desirable for when you are wearing it with a harness. I wore this bag with a harness for a full day and then a few sporadic times, and felt that it didn't really carry well enough with the harness to make up for the annoyance without the harness.Another minor thing, the skirt on top is way annoying. With nothing in the pack, its like a tunnel you have to crawl through to get inside, and with the pack full, its like a loose tower of junk that falls to the side when you undo the cinch. I have a mountain hardware bag that has a wonderful skirt, and the skirt on my old osprey bag was great, so this is just a design failure, not a skirt thing.The most major problem with this bag is the suspension. I carried probably 35lb with it for three days and it had to have been the most uncomfortable walk of my life. The shoulder straps cut into my shoulders the entire time, and the hip straps could not support any weight. Firstly, the hip straps have a novel little pad arrangement, where the strap passes through sort of a 'Z' shaped friction thing. When the hipbelt it really tight, like when you are carrying some weight, this 'Z' shape collapses and folds the pad or liner over on itself and cuts into your hip in a brutal little hotspot. I actually found that when I got home and rearranged the pads with no weight, the hot spot was still there and i could feel it for the rest of the times I wore the pack, regardless of weight or strap tension. Eventually I took the pads off and the straps worked much better. Secondly, the back panel is far too flimsy for anything. Initially, when I wore this with a ton of weight, I thought perhaps I had overloaded the poor bag. It was stuffed to the brim with stuff strapped to the sides. It felt distictlt that the shoulder were taking all the weight. If I loosened them to get more weight on the hips, the pack would lean way off the back of me and pull on my shoulders in a hideous fashion. Then, I wore it cragging. I had a single rack on the light side with a 60m rope. Not packed too full, but decently heavy. I noticed that the back panel fully sagged away from my back, meaning all the weight was on the shoulder straps. Still, really uncomfortable. Finally, I took it on a work trip. It just had clothes and laptop in it, but i packed pretty loose. So, the bag was more or less full but not heavy. Still, uncomfortable. The back panel again sagged away and meant that even with a tight hipbelt and constantly adjusted straps, I was feeling all of the weight on my shoulders. So to recap; Fully loaded and heavy, medium loaded and heavy, fully loaded and light, all uncomfortable. There is clearly no loadpath for the weight to get into the hipbelt in a meaningful way. The load straps above the shoulders are also located too low, so they don't really do much. To summarize, I found the suspension on this bag is genuinely terrible, considering the use case it is designed for.I also thought riding my bike with this bag was annoying as it sits up real high and keeps you from lifting your head up.Another annoying thing, I noticed after only a few months of light use, the shoulder strap was ripping out where it was connected to the back panel. I returned it, and of course got all my money back, but dang. I wish it were as functional as it is pretty.
I found this pack to be just what I was looking for. It's lightweight, but more durable than my ultralight hiking bag I had been using for small climbing days. There's just a few small things that are weird. It's nice that there is an extendable collar for extra bulky gear, etc, but this pack is way larger than 35L! And when compressing it down to its smallest size, the way the buckles are configured makes for a loose closure allowing water in potentially, so pack liner is recommended. I'd like to see the pack closer to its stated size. I like the daisy chains running down the front of the pack it makes it possible to run shock cord on the front panel for holding helmets or jackets. But I would have liked if there was a different closure system. The Y buckle closure ... MoreI found this pack to be just what I was looking for. It's lightweight, but more durable than my ultralight hiking bag I had been using for small climbing days. There's just a few small things that are weird. It's nice that there is an extendable collar for extra bulky gear, etc, but this pack is way larger than 35L! And when compressing it down to its smallest size, the way the buckles are configured makes for a loose closure allowing water in potentially, so pack liner is recommended. I'd like to see the pack closer to its stated size. I like the daisy chains running down the front of the pack it makes it possible to run shock cord on the front panel for holding helmets or jackets. But I would have liked if there was a different closure system. The Y buckle closure is decent for when the pack is full, but the fact that the front buckle can't be adjusted makes for awkward closure with small loads. I like the drawstring collar, but pairing that with an easily closable buckle as on previous models would be wonderful. Overall it's a really comfortable pack for a pretty light weight, and the gear loops on the hips are a nice addition too. I think with a few revisions like: simpler closure, and smaller collar for lighter overall weight, it could be a truly excellent pack! If they could get this pack down to 20 ounces it would be incredible. But still one of the best packs I've ever used.
| Capacity | 35 L |
| Depth | 9.5 in (Small) |
| Height | 24 in (Large) |
| Width | 11 in (Small) |
| Weight | 771 g |