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  • Ultimate Direction Fastpack 15

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Fastpack 15

Out Of Stock
"Under-promise and over-deliver" - the Fastpack 15 actually holds over 20 liters.

Specs & Details

  • Large front storage for water, phone, maps, glasses, or food
  • Sliding rail sternum straps
  • Designated no-bounce laptop pocket with cord storage securely inside
  • MonoRip Mesh is very strong, but extremely breathable

Sizing at Chest (Unisex):

  • S/M: 64 cm - 102 cm
  • M/L: 76 cm - 122 cm
  • Measure wearing the clothes you intend to wear
  • A pack full of gear will fit smaller


  • 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
New Badge: Yes
  • Product Reviews


    Write A Review

    1. School, commute, run

      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!
      on Apr 16th 2017

    2. The Swiss Army Knife of Packs

      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. on Apr 12th 2017

    3. One Fastpack to Rule Them All

      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.
      on Mar 3rd 2017