I bought this new and never ended up using it.   I had aspirations of trail running but my knees prefer hiking :(  It has been worn around the house but never outside and never in the field.  I paid $190 for it a few months ago and missed the return window.   Specs per the GG website.  36 liter, size M/L 21.5oz

From GG:  “The Fast Kumo is a new spin on a Gossamer Gear classic. This pack has been re-designed with a vest- like fit and easy access storage to keep up with you at your fastest speeds.  This fastpack is designed to be worn higher and tighter than our original Kumo. For this reason, the back length for S/M is 16″ and 18” for M/L. Please keep this in mind when selecting your size.

  • Over-the-Top Closure
  • Removable Sitlight Pad
  • Easy access side pockets can be accessed from top or side while wearing
  • Detachable Fast Belt with stretch mesh zippered pockets
  • Layered shoulder strap pockets for easy access to bottles and nutrition
  • Dual sternum straps for a more secure fit
  • Zippered phone pocket on shoulder strap
  • Hydration tube routing system
  • Trash stash pocket