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So far I've done two long day run/hikes with it, and I love it. It's super comfy and as long as the weight is balanced front and back it doesn't bounce or move too much. The front zipper fits my phone and a couple waffles, a soft flask in the other pocket, and lots of snacks in the small front pockets.
It's first trip was the Enchantments as a thru-run, so I had some extra warm clothes and my nice camera. Having the zipper open from the bottom is nice so I can get my camera quickly without unrolling the top. Trekking poles and water filter fit well in the outer pockets.
My only question to UD on design...why is the zipper not a waterproof/resistant type? Lisa Wilson on Sep 12th 2017
I've only had a chance to do one short 20 mile run in the fastpack 15. I added enough weight to simulate an overnight trip along with a 70 oz hydration bladder.
the pack was comfortable to run with, it felt snug with little to no bounce. So far I only have 1 complaint. the hose for the hydration bladder only has on point to exit the pack which is directly behind the head. the causes the hose to rub on my neck which would have caused chaffing on a much longer run. I tried to route the hose differently but it wasn't right. Last night I had my wife make a hole on the right side of the pack and reinforced it with seaming material. Hopefully that will do the job. otherwise I think this is going to be a great pack.
I had her do the same to my 20/30 pack which I will be taking on a solo 150 fastpack trip next week. Rich Flint on Aug 7th 2017
This is really a nice sized pack for an all day adventure; with stretch pockets it's very close to 20 liters
I had mine loaded with a little over 8 lbs (about 1/2 that in water) and took it out for 20-ish mile run in the mountains. Pack carries very nicely- no bounce or sway and it's very comfortable. The pockets are laid out nicely and easy to access. I was happy to see that my favorite water bottle, a repurposed Vitamin Water bottle) fits perfectly in bottle pouch. My iPhone 6 with a Lifeproof case fits perfectly on the opposite side. The flat compartment behind the phone holder is the perfect place to stash your map.
I really like the two big mesh pockets, they easily add 5 liters to the overall volume. I like the two way zipper to access the main compartment (you can also access via the roll top). I think this zipper should be a water resistant one however as the main pack material, Robic, is highly water resistant.
A few cons:
I don't like the new style buckles, they don't look any lighter than previous ones, but are difficult to close- almost have to be looking at them to get perfectly lined up.
The shoulder/harness straps need to be lengthened- when the pack is loaded (and a bladder used) I found that I was almost to the very end of the adjustment. This is with a M/L and I'm not overly large (~180 lbs with a 42-ish" chest. Someone larger could bump into problems. I like the double sliding sternum straps, but they could be improved in my opinion with one side being elastic webbing.
I'm planning on a bare bones overnighter with this pack and will report back with my impressions. While this pack probably wasn't designed with overnighters in mind, I think with the right selection of gear it will do the trick.
All in all, I very much like this pack! Mike M on Jul 17th 2017
I was searching pack for running between work and home with laptop while listening music from my phone. And now I have found the perfect pack for that! My 15" MBP 2016 fits easily inside the laptop compartment and my iPhone 6 plus into zippered front pocket.
That zippered pocket could be just a little bit wider. With my Griffin Survivor Core phone cover I can just barely get the zipper closed. And its not the larges phone cover available on market. Right side pocket has more volume so I will propably use that for phone.
15" laptop in it's own compartment won't bend around your back as the pack itself would when filled with something more bendable. I have ran only one time with the laptop, 8km / flat and had no problems with anything.
I certainly will use the pack also for adventure / multisport training/competitions.
I love it! Timo Waltari on May 31st 2017
I've owned 3 of the FastPack 20's and have put them through long training runs, commutes, multiple 170-mile stage races, and the Vol State. So, I am no stranger to UD and their amazing products. I'd been looking for a pack that was a little smaller for commutes and for my next Vol State. and I think that this is the best of their fastpack line for that purpose. I've been training in it for a few weeks and here is my assessment:
- I love the zipper that allows easy access to all areas without unrolling the top.
- I love the size and the outside stretch pockets on the back
- The fit is fantastic, as I've come to expect from UD
- The material and the build is very durable and will take a beating
- It will hold a 3 Liter reservoir snugly and without bounce
- I would prefer bottle holder pockets on each strap
- I had to remove the back padding by cutting and resealing the pack, due to chaffing and would like to see this removable as it is in the larger packs
- Gear loops on the back to run a shock cord through for compression would help.
That's it. It's a fine pack and aside from self-supported multi-day stage events, this is my go-to pack for commuting and day-long self-supported runs.
Thanks to UD for the best running packs ever made. Chris on May 9th 2017
This pack is amazing, with the laptop sleeve I am using it as a school bag, for my commute ride to work and for running. With the front pocket I can have an easy access to all the stuff I normally carry in my pants pockets (phone, keys, wallet) so I no longer need to have pants or long shorts with pockets, from now its all about split shorts!
Thanks UD for this amazing pack! Unknown on Apr 16th 2017
This pack is incredibly versatile & comfortable! I use it for run commuting, biking to the gym & trekking around town. It cradles my MacBook Air 13" securely. Unlike the other Fastbacks, the front zipper allows quick access to the main compartment while the fold-down top expands storage. The convenient front pockets set UD apart from all other brands...I can grab my phone, wallet, keys & energy bar without removing the pack. When biking, the stretch pockets fit the U-lock perfectly and the reflective details let drivers see me. This has become my "go to" pack for everyday use. Cliff on Apr 12th 2017
For multi-activity days, this is my go-to pack! Legitimately runnable (it's just a little larger than the PB Adventure vest) the Fastpack 20 is also a great, comfortable pack for hiking, mountain biking, climbing, coffee shop haunting - you name it!
I absolutely love the back two outside power mesh pockets: good to put additional food and water, clothes, and perfect for a second pair of shoes. Bike commuting to work? Pop your work shoes in these pockets and swap your shoes right after you lock your bike up. The pack can hold additional volume to grab some grub from the store when riding home.
The orange is a great, bold color. The left cellphone pocket holds my large cellphone with equally monstrous cellphone protector just fine.
As well as comfortable, this pack is made to LAST, being one of the most bulletproof UD product I've ever had the pleasure of using. Justin on Mar 3rd 2017