At home in the daily grind or on the trail, the Echo has three zippered pockets, one on the upper front (w/ key hook), an internal mesh pocket and the removable chamber pocket.  The back panel has a bladder pocket with dual hose exits on either side of the top handle leading to elastic hose retainers on each strap. Dual Nalgene pockets on either side will stretch to hold Jetboils or tripods.  The front stash pocket is made from the same 4 way stretch material as the side pockets.  A bungie on the front will keep your rain layer or tarp away from your gear. Bottom web tracks and tabs above the bottle pockets will link up with a Sherman or Grab-it. If you’ve packed to the brim and still need more space, grab the zipper pull under one of the hydration port exits and unzip the expansion gusset to gain 500 in³ extra space. The included web belt will help stabilize when needed and detaches when it’s not.  The included removable Xpac Chamber pocket keeps important gear at the top of the main compartment and out of the crunch zone.  Made from 500d Cordura and lined with VX21S Xpac material, this pack will keep your contents safe and dry.  Milspec webbing, elastic, buckles and YKK zippers round out the construction.   2lbs 2oz – 1.05 kg bag only  Main compartment – 1300 in³ / 21.3 L  Expansion panel adds – 500 in³ / 8.19 L