Find Your Store
Home Page

Cart, contains 0 items

When autocomplete results are available use up and down arrows to review and enter to select. Touch device users, explore by touch or with swipe gestures.
Expert Help
Earn Rewards

Mountain Hardwear
PCT 70L Backpack

4.55 out of 5 stars
20 Reviews
Color:Black Spruce


Size Chart


Why We Like The PCT 70L Backpack

We load up our essentials into the PCT 70L Backpack for a summer on the trail. The lightweight frame transfers our heavy load to our hips where the pivoting hip belt keeps it centered as we trek over rolling, technical terrain. We feel cool mountain breezes flow through the body-hugging back panel, making our sweltering afternoon miles more bearable. When we happen upon a side trail, we dump the weight and take the detachable daypack out for a little road-less-traveled exploration.


  • Rugged backpack for thru-hikes and backcountry adventures
  • Large capacity for long multi-day treks
  • Sturdy perimeter frame manages heavy loads
  • Trampoline back panel provides full support
  • Padded shoulder straps and hip belt for comfortable carry
  • Bottom zippered pocket gives access to main compartment
  • Trekking pole / ice axe carry loops and daisy chain for organization
  • Item #MHWZ9I6
Responsible Collection
[face fabric] 210D recycled ripstop nylon, [bottom] 500D Cordura nylon plain weave, [lining] 70D ripstop nylon polyurethane
[small/medium] 70L (4272cu in), [medium/large] 72L (4394cu in)
full trampoline back panel, 7000-series aluminum perimeter frame, adjustable torso length
Shoulder Straps
Waist Belt
padded, 3D pivot
Hydration Compatible
removable hydration sleeve (reservoir not included)
top cinch collar, lower zippered U-pocket access to main
expandable front shove-it with zippered interior pocket, 1 zippered front, 2 zippered hipbelt, 2 dual-access side stretch water bottle, removable top lid with 2 zippered compartments
Gear Loops
front daisy chain
Ice Axe Carry
attachment loop
Trekking Pole Carry
attachment loop
Detachable Daypack
removable hydration sleeve doubles as daypack
dual side compression straps
[small/medium] 32.1 x 15.7 x 16.1in, [medium/large] 32.9 x 15.7 x 15in
Claimed Weight
[small/medium] 4lb 1oz [medium/large] 4lb 2.6oz
Manufacturer Warranty

Overall Rating

4.5 based on 20 ratings

Review Summary

1 Stars - 1 reviews
2 Stars - 1 reviews
3 Stars - 0 reviews
4 Stars - 2 reviews
5 Stars - 16 reviews

Fits Slightly Small

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


Selecting an option will reload the available reviews on the page
5 out of 5 stars

July 8, 2024

Thoughtful design and very comfortable.

Very impressed with this pack. I needed something a little larger than my lightweight 58L back for an upcoming trip. I was a little hesitant due to the base weight difference, but absolutely satisfied with this pack. It carries weight extremely well. I've had up to 45 lbs in it without discomfort. The organization is fantastic. 3 compartments on the brain. Main section with bottomed access for sleep system. Outer pouch holds a lot of gear-perfect for rain gear and camp shoes, plus there's a zippered compartment. Side pockets swallow 2x 1L smart water bottles, and my camp chair fits in the other. Easy access to the side pockets with the pack on, with a slit for reinserting the water bottles. The only thing I'd wish for are pouches on the shoulder straps for bear spray or a phone. All in all, to many great features to list. My new go-to pack for longer trips.


Originally reviewed on

4 out of 5 stars

May 10, 2024

Great pack so far

Bought this bag to get me through the west coast trail, haven't gone yet but in my preparation I have carried some heavy loads (3 climbing ropes, climbing hardware and some camera gear) no problem. Genuinely surprised at the comfort of the pack while hauling that much. Large pockets and openings make it easy to load the pack to capacity and the front flap is great to be able to access specific items without having to take stuff off the top. Only thing holding me from a perfect review is that I haven't gone on my trip yet and have only used it to haul gear to the crag :)

user image

Originally reviewed on

5 out of 5 stars

April 20, 2024

Surprise extra treat

I have taken this on 2 trips so far and love it. I am a female but I bought this for the color and its been fine. There is a surprise hydration bag inside that is removable and turns into a daypack! it was such a delight to discover this. My water leaked but the bag kept my clothes totally dry.


Originally reviewed on

5 out of 5 stars

September 27, 2023

Big load hauler

The layout and org on this pack are amazing! Love having access from the top as well as big panel zipper on the front of the pack. Pockets in the lid and in the overflow are perfect for keeping everything you need for a week plus on the trail organized. The load carry on this pack is great too. Had it loaded up with over 50 pounds on the hike in to the base camp before climbing the Grand Teton and it carried comfortably with no hot spots or tension. Stoked to have a new backpacking pack!


Originally reviewed on

5 out of 5 stars

July 14, 2023

Tested in the Grand Tetons

After a few test runs with gear and a few adjustments, I got this bag to fit perfect. There's a perfect amount of pockets and space to store all your gear in. The inside removable day bag came in pretty handy one night when we set up our base camp then hiked to a swimming spot. The only thing I wasn't a fan of was the trekking pole holders, I tried watching the video on how to get them to work, and I think I kept doing it wrong. Also once you get everything packed in and pulled tight, it was kinda difficult to get my water bottles out of the sides and pretty much impossible to put them back in alone. I either had to have someone help or take my pack off. Still, for the price, size, and features, I'd give it a solid 8.5/10

user image

Originally reviewed on

1 out of 5 stars

July 10, 2023

Not for me

About me: 5'4 with long torso, 125 pounds, purchased M/L. AVID outdoor enthusiast and outdoor professional--meaning I use my pack for work all the time. I have thousands of miles under my belt (most being from weekend to extended 10 day trips). I expect my gear to be streamlined, durable, functional. I have high standards, as I love the Earth and want my investments to last (and not pile up in a landfill). I bought this with excitement, as my 15 year old pack needs retirement. Having great success with the Mountain Hardwear BMG 105 (winter) pack, I thought this would be perfect for smaller loads in summer. Upon receiving it, I was extremely disappointed. Here's why: Pros: *It fits like a glove. (See sizing above) Comfortable. I can tell it wouldn't need a break in period,, and makes the deal-breaking cons that much more of a bummer! Cons: *Sleeping bag compartment? Last I checked, my sleeping bag is far bulkier than my 4 year old's blankie. It is abysmally small and compact. I can't imagine what I'd put in there. What a waste of space. The inability to fully open it to match the main compartments size is frustrating to say the least. It gives me the same feeling of when the car seat belt locks on me inappropriately. "This. Isn't. Supposed. To. Be. So. Tight!!!" Argh! To be clear, it's stitched in a way that the frame of the pack bulges into what should be the compartment, and is super tight on the frontside as well, as it seems they took space out of the bottom compartment to compensate for huge side pockets.... this creates a tight bottleneck to squeeze stuff though into the compartment only slightly larger than the bottleneck. You can see this in the photos. Why, MH? Why?? *Straps under sleeping bag compartment are too short to carry much of anything on bottom-outside when pack is loaded. Where will I put my tent? I like it bottom center for balance and lower weight load. *Speaking of weight load...the stuff it pocket in front might be a quarter to a third of the bag's capacity. It sticks so far off the pack that it feels unbalanced. Not for me. *Water bottle pockets: not super easy to use or convenient to retrieve/return when loaded. I gave it an "okay" on quality, since MH gear is usually tough and lasts, but quality of design on this bag (IMO) sucks. I don't usually leave reviews, but this is an honest one....those are becoming harder to suss out with all the 'bot reviews. This pack might be great for you, but it's not for me. Disappointed. (Also, tried to add photos but it isn't working. With my sleeping bag (up and down, because I sure can't squeeze it in that tiny bottle-necked compartment ) and bear canister in the main compartment, I have about 6" of space left.)

user image
Avid Outdoor

Originally reviewed on

5 out of 5 stars

April 14, 2023

Best pack all around

Perfect size perfect weight. Love these packs. They are tough as nails!

Jason Lyle

Originally reviewed on

5 out of 5 stars

February 18, 2023

Awesome pack

Very light and durable. Holds everything I need and distributes the weight well. The mesh trampoline back panel provides exhalent ventilation.

user image

Originally reviewed on

5 out of 5 stars

September 29, 2022

Held up on the JMT

This backpack did its job for 225 miles on my JMT thru hike. The 70L will fit a BV500 bear can in horizontal, freeing up top space for the rest of your gear, but also works well vertical. One side pocket can hold two 1-liter smart water bottles well but can get annoying with one prone and the other vertical when trying to stow, but it wasn't a huge issue. Ended up keeping one in each side pocket. Plenty of storage and access for the rest of my gear. The removable daypack came in super handy for my Mt. Whitney summit with plenty of room for a rain jacket, two 1-liter water bottles, filter, gloves, hat, and many, many snacks. Best to roll up the daypack and stow in the bottom of the backpack when not in use. I also suggest removing the lower inside compartment separator to free up packing space when carrying a bear can. I highly recommend a trash compactor bag for a liner as your gear will certainly get wet if subject to a heavy soaking rain. A very comfortable backpacking/multi day pack that can manage weight well. A few small battle scars but no holes.


Originally reviewed on

5 out of 5 stars

August 6, 2022

Great pack for hot weather

i love the trampoline back panel which helps with load bearing but especially helps keep your back from sweating


Originally reviewed on