“Under-promise and over-deliver” – the Fastpack 15 actually holds over 20 liters.
  • Large front storage for water, phone, maps, glasses, or food
  • Sliding rail sternum straps
  • Designated no-bounce laptop pocket with cord storage securely inside
  • Secured Volume: 15L / 915 in3
  • Unsecured Volume: 6L / 366 in3
  • Total Volume: 21L / 1281 in3
  • Weight: 17.5 oz / 500g
  • Dimensions: 18.5″ x 10.2″ x 7.5″ / 47 cm x 26 cm x 19 cm
  • MonoRip Mesh: Breathable, non-stretch, and hydrophobic – this lightweight monofilament mesh is ideal for bounce-free load carrying
  • 100D Robic Triple-Ripstop: High-tenacity nylon for strength and durability
  • Power Span Stretch Mesh: High-strength, durable stretch mesh allows you to see inside pocket to view contents



The Fastpack 15 is a smaller volume pack than the Fastpack 20 I have been using but the basic fit is the same. Easy to adjust double sternum straps do a great job controlling the load. The Fastpack 15 comes in two sizes and the sample I was given to test is the M/L which is probably not the size i’d buy as I think the S/M would suit me better but the Fastpack 20 I have is also a M/L so it works fine.



The Fastpack 15 has some unique features compared to the bigger options in the Ultimate Direction line up. A big front zipper allows easy access to all your stuff quickly and still maintains the weather resistant roll top closure. The pack features 2 big stuff mesh pockets on the front of the pack which seem great for stashing jackets, trekking poles, extra shoes or other stuff that you are OK exposing to the elements. Inside the pack is the expected reservoir sleeve which also doubles as a padded laptop sleeve for run commuters. A small zippered mesh pocket offers a safe place for small extras that would otherwise get lost in the pack. This pack does not have a removable foam back pad like the Fastpack 20 did so it clearly wasn’t intended for light overnight or multiway self supported run races. The harness system is very similar to the Fastpack 20 but with a couple small changes. There is just one pocket suitable for a bottle and the other is a more secure zippered pocket for a phone or other device. Two small zippered pockets sit below these two larger ones.



Not too many things that I found quirky about the 15. Time will tell if the zipper feature on the bag is worth having as it does add weight and reduces weather resistance as well, with a small pack like this it isn’t hard to find what you are looking for.


I have used a Fastpack 20 for over a year now and have carried a variety of load weights and sizes and have consistently found it to be a great pack. This new Fastpack 15 doesn’t have the versatility of the 20 (soon to be the 25) but should be a great pack for those with specific loads to carry whether they are commuting or running specific distances or races that require a certain amount of gear. The fabric on the back panel is the same ripstop nylon found on the rest of the pack when compared to the InfiKnit on the bigger packs. This doesn’t feel as nice and I have yet to run in warm conditions to see if it deals well with precipitation and sweat so time will tell on that. Overall it is a nice addition to the line for those that won’t need the 25 but find the traditional run vests too limiting in capacity.


Dave Cressman
Dave CressmanDistance Runwear - Owner - Head Coach
Dave is the owner of Distance Runwear, the first Certified Road Running Instructor in Canada and a former Collegiate Cross Country Champion. Dave has been running track, cross country, road and trail ultra marathons since he was 11 years old. He has also competed nationally in Road, Cyclocross and Mountain biking, Paragliding, Telemark skiing, Orienteering, Nordic skiing and more.